45655551 has 12 divisors (see below), whose sum is σ = 67481128. Its totient is φ = 29728944.

The previous prime is 45655549. The next prime is 45655559. The reversal of 45655551 is 15555654.

45655551 is a `hidden beast` number, since 4 + 56 + 55 + 551 = 666.

It is not a de Polignac number, because 45655551 - 2¹ = 45655549 is a prime.

It is a super-2 number, since 2×45655551² = 4168858674227202, which 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 (45655559) 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 11 ways as a sum of consecutive naturals, for example, 58600 + ... + 59373.

Almost surely, 2^45655551 is an apocalyptic number.

45655551 is a deficient number, since it is larger than the sum of its proper divisors (21825577).

45655551 is a wasteful number, since it uses less digits than its factorization.

45655551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118022 (or 118019 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 45655551 is about 6756.8891510813. The cubic root of 45655551 is about 357.4082141662.

The spelling of 45655551 in words is "forty-five million, six hundred fifty-five thousand, five hundred fifty-one".