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55500501 = 371927321
BaseRepresentation
bin1101001110110…
…1111011010101
310212102201101010
43103231323111
5103202004001
65301322433
71242514020
oct323557325
9125381333
1055500501
1129368391
1216706419
13b662c44
14752a1b7
154d148d6
hex34eded5

55500501 has 24 divisors (see below), whose sum is σ = 89269824. Its totient is φ = 30041280.

The previous prime is 55500499. The next prime is 55500527. The reversal of 55500501 is 10500555.

It is not a de Polignac number, because 55500501 - 21 = 55500499 is a prime.

It is a super-2 number, since 2×555005012 = 6160611222502002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55500701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3921 + ... + 11241.

It is an arithmetic number, because the mean of its divisors is an integer number (3719576).

Almost surely, 255500501 is an apocalyptic number.

It is an amenable number.

55500501 is a deficient number, since it is larger than the sum of its proper divisors (33769323).

55500501 is a wasteful number, since it uses less digits than its factorization.

55500501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7369 (or 7350 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 21.

The square root of 55500501 is about 7449.8658377182. The cubic root of 55500501 is about 381.4453290582.

The spelling of 55500501 in words is "fifty-five million, five hundred thousand, five hundred one".

Divisors: 1 3 7 19 21 57 133 361 399 1083 2527 7321 7581 21963 51247 139099 153741 417297 973693 2642881 2921079 7928643 18500167 55500501