55365761 has 16 divisors (see below), whose sum is σ = 64229760. Its totient is φ = 47224320.

The previous prime is 55365749. The next prime is 55365763. The reversal of 55365761 is 16756355.

It is not a de Polignac number, because 55365761 - 2¹⁰ = 55364737 is a prime.

It is a super-2 number, since 2×55365761² = 6130734982218242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55365763) 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, 11345 + ... + 15473.

It is an arithmetic number, because the mean of its divisors is an integer number (4014360).

Almost surely, 2^55365761 is an apocalyptic number.

It is an amenable number.

55365761 is a deficient number, since it is larger than the sum of its proper divisors (8863999).

55365761 is a wasteful number, since it uses less digits than its factorization.

55365761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4216.

The product of its digits is 94500, while the sum is 38.

The square root of 55365761 is about 7440.8172266224. The cubic root of 55365761 is about 381.1363973630.

The spelling of 55365761 in words is "fifty-five million, three hundred sixty-five thousand, seven hundred sixty-one".