55507751 has 8 divisors (see below), whose sum is σ = 60175584. Its totient is φ = 50896800.

The previous prime is 55507723. The next prime is 55507757. The reversal of 55507751 is 15770555.

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

It is a cyclic number.

It is not a de Polignac number, because 55507751 - 2¹⁸ = 55245607 is a prime.

It is a super-2 number, since 2×55507751² = 6162220842156002, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55507757) 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 7 ways as a sum of consecutive naturals, for example, 12176 + ... + 16101.

It is an arithmetic number, because the mean of its divisors is an integer number (7521948).

Almost surely, 2^55507751 is an apocalyptic number.

55507751 is a deficient number, since it is larger than the sum of its proper divisors (4667833).

55507751 is a wasteful number, since it uses less digits than its factorization.

55507751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28441.

The product of its (nonzero) digits is 30625, while the sum is 35.

The square root of 55507751 is about 7450.3524077724. The cubic root of 55507751 is about 381.4619376664.

The spelling of 55507751 in words is "fifty-five million, five hundred seven thousand, seven hundred fifty-one".