55513641 has 4 divisors (see below), whose sum is σ = 74018192. Its totient is φ = 37009092.

The previous prime is 55513621. The next prime is 55513643. The reversal of 55513641 is 14631555.

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.

It is not a de Polignac number, because 55513641 - 2⁵ = 55513609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55513599 and 55513608.

It is not an unprimeable number, because it can be changed into a prime (55513643) 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, 9252271 + ... + 9252276.

It is an arithmetic number, because the mean of its divisors is an integer number (18504548).

Almost surely, 2^55513641 is an apocalyptic number.

It is an amenable number.

55513641 is a deficient number, since it is larger than the sum of its proper divisors (18504551).

55513641 is a wasteful number, since it uses less digits than its factorization.

55513641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18504550.

The product of its digits is 9000, while the sum is 30.

The square root of 55513641 is about 7450.7476806023. The cubic root of 55513641 is about 381.4754296641.

It can be divided in two parts, 555 and 13641, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 55513641 in words is "fifty-five million, five hundred thirteen thousand, six hundred forty-one".