55401265 has 4 divisors (see below), whose sum is σ = 66481524. Its totient is φ = 44321008.

The previous prime is 55401263. The next prime is 55401277. The reversal of 55401265 is 56210455.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15610401 + 39790864 = 3951^2 + 6308^2 .

It is a cyclic number.

It is not a de Polignac number, because 55401265 - 2¹ = 55401263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55401263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5540122 + ... + 5540131.

It is an arithmetic number, because the mean of its divisors is an integer number (16620381).

Almost surely, 2^55401265 is an apocalyptic number.

It is an amenable number.

55401265 is a deficient number, since it is larger than the sum of its proper divisors (11080259).

55401265 is a wasteful number, since it uses less digits than its factorization.

55401265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11080258.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 55401265 is about 7443.2026037184. The cubic root of 55401265 is about 381.2178494791.

The spelling of 55401265 in words is "fifty-five million, four hundred one thousand, two hundred sixty-five".