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55555500037 = 3711953125617
BaseRepresentation
bin110011101111010111…
…011010100000000101
312022101202110210222111
4303233113122200011
51402234202000122
641304415101021
74004500646602
oct635727324005
9168352423874
1055555500037
11216196a44a4
12a925511771
135314a1635b
1429904b36a9
1516a2478d77
hexcef5da805

55555500037 has 8 divisors (see below), whose sum is σ = 57062227736. Its totient is φ = 54049047552.

The previous prime is 55555500023. The next prime is 55555500059. The reversal of 55555500037 is 73000555555.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17411066401 + 38144433636 = 131951^2 + 195306^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55555500037 - 223 = 55547111429 is a prime.

It is a super-2 number, since 2×555555000372 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55555500437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379453 + ... + 505069.

It is an arithmetic number, because the mean of its divisors is an integer number (7132778467).

Almost surely, 255555500037 is an apocalyptic number.

It is an amenable number.

55555500037 is a deficient number, since it is larger than the sum of its proper divisors (1506727699).

55555500037 is a wasteful number, since it uses less digits than its factorization.

55555500037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137607.

The product of its (nonzero) digits is 328125, while the sum is 40.

The spelling of 55555500037 in words is "fifty-five billion, five hundred fifty-five million, five hundred thousand, thirty-seven".

Divisors: 1 37 11953 125617 442261 4647829 1501500001 55555500037