55613413 has 4 divisors (see below), whose sum is σ = 55632640. Its totient is φ = 55594188.

The previous prime is 55613407. The next prime is 55613419. The reversal of 55613413 is 31431655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31431655 = 5 ⋅6286331.

It is an interprime number because it is at equal distance from previous prime (55613407) and next prime (55613419).

It is a cyclic number.

It is not a de Polignac number, because 55613413 - 2⁵ = 55613381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55613419) 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, 4293 + ... + 11386.

It is an arithmetic number, because the mean of its divisors is an integer number (13908160).

Almost surely, 2^55613413 is an apocalyptic number.

It is an amenable number.

55613413 is a deficient number, since it is larger than the sum of its proper divisors (19227).

55613413 is a wasteful number, since it uses less digits than its factorization.

55613413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19226.

The product of its digits is 5400, while the sum is 28.

The square root of 55613413 is about 7457.4401103864. The cubic root of 55613413 is about 381.7038287095.

The spelling of 55613413 in words is "fifty-five million, six hundred thirteen thousand, four hundred thirteen".