55704551 has 16 divisors (see below), whose sum is σ = 68579328. Its totient is φ = 44193600.

The previous prime is 55704533. The next prime is 55704581. The reversal of 55704551 is 15540755.

It is not a de Polignac number, because 55704551 - 2¹⁸ = 55442407 is a prime.

It is a super-2 number, since 2×55704551² = 6205994004223202, 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 (55704511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 590 + ... + 10571.

It is an arithmetic number, because the mean of its divisors is an integer number (4286208).

Almost surely, 2^55704551 is an apocalyptic number.

55704551 is a deficient number, since it is larger than the sum of its proper divisors (12874777).

55704551 is a wasteful number, since it uses less digits than its factorization.

55704551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11222.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 55704551 is about 7463.5481508462. The cubic root of 55704551 is about 381.9122241057.

The spelling of 55704551 in words is "fifty-five million, seven hundred four thousand, five hundred fifty-one".