55913069 has 4 divisors (see below), whose sum is σ = 58344096. Its totient is φ = 53482044.

The previous prime is 55913063. The next prime is 55913071. The reversal of 55913069 is 96031955.

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 a cyclic number.

It is not a de Polignac number, because 55913069 - 2²⁰ = 54864493 is a prime.

It is a super-2 number, since 2×55913069² = 6252542569997522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55913063) 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, 1215479 + ... + 1215524.

It is an arithmetic number, because the mean of its divisors is an integer number (14586024).

Almost surely, 2^55913069 is an apocalyptic number.

It is an amenable number.

55913069 is a deficient number, since it is larger than the sum of its proper divisors (2431027).

55913069 is a wasteful number, since it uses less digits than its factorization.

55913069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431026.

The product of its (nonzero) digits is 36450, while the sum is 38.

The square root of 55913069 is about 7477.5041959199. The cubic root of 55913069 is about 382.3881661465.

The spelling of 55913069 in words is "fifty-five million, nine hundred thirteen thousand, sixty-nine".