55617345 has 48 divisors (see below), whose sum is σ = 110702592. Its totient is φ = 25303680.

The previous prime is 55617337. The next prime is 55617347. The reversal of 55617345 is 54371655.

55617345 is a `hidden beast` number, since 5 + 5 + 617 + 34 + 5 = 666.

It is not a de Polignac number, because 55617345 - 2³ = 55617337 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55617347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120415 + ... + 120875.

It is an arithmetic number, because the mean of its divisors is an integer number (2306304).

Almost surely, 2^55617345 is an apocalyptic number.

It is an amenable number.

55617345 is a deficient number, since it is larger than the sum of its proper divisors (55085247).

55617345 is a wasteful number, since it uses less digits than its factorization.

55617345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862 (or 859 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 55617345 is about 7457.7037350648. The cubic root of 55617345 is about 381.7128242857.

The spelling of 55617345 in words is "fifty-five million, six hundred seventeen thousand, three hundred forty-five".