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55038837 = 372620897
BaseRepresentation
bin1101000111110…
…1001101110101
310211120021002110
43101331031311
5103042220322
65243401233
71235552040
oct321751565
9124507073
1055038837
1129082547
1216523219
13b530a79
147449c57
154c72c0c
hex347d375

55038837 has 8 divisors (see below), whose sum is σ = 83868736. Its totient is φ = 31450752.

The previous prime is 55038829. The next prime is 55038847. The reversal of 55038837 is 73883055.

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

It is not a de Polignac number, because 55038837 - 23 = 55038829 is a prime.

It is a super-4 number, since 4×550388374 (a number of 32 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55038795 and 55038804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55038817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1310428 + ... + 1310469.

It is an arithmetic number, because the mean of its divisors is an integer number (10483592).

Almost surely, 255038837 is an apocalyptic number.

It is an amenable number.

55038837 is a deficient number, since it is larger than the sum of its proper divisors (28829899).

55038837 is a wasteful number, since it uses less digits than its factorization.

55038837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620907.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 55038837 is about 7418.8164150355. The cubic root of 55038837 is about 380.3847372970.

The spelling of 55038837 in words is "fifty-five million, thirty-eight thousand, eight hundred thirty-seven".

Divisors: 1 3 7 21 2620897 7862691 18346279 55038837