55406313 has 6 divisors (see below), whose sum is σ = 80031354. Its totient is φ = 36937536.

The previous prime is 55406297. The next prime is 55406347. The reversal of 55406313 is 31360455.

It can be written as a sum of positive squares in only one way, i.e., 55308969 + 97344 = 7437^2 + 312^2 .

It is not a de Polignac number, because 55406313 - 2⁴ = 55406297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55406513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3078120 + ... + 3078137.

It is an arithmetic number, because the mean of its divisors is an integer number (13338559).

Almost surely, 2^55406313 is an apocalyptic number.

It is an amenable number.

55406313 is a deficient number, since it is larger than the sum of its proper divisors (24625041).

55406313 is a wasteful number, since it uses less digits than its factorization.

55406313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6156263 (or 6156260 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 55406313 is about 7443.5416973374. The cubic root of 55406313 is about 381.2294276098.

Adding to 55406313 its reverse (31360455), we get a palindrome (86766768).

The spelling of 55406313 in words is "fifty-five million, four hundred six thousand, three hundred thirteen".