55162407 has 4 divisors (see below), whose sum is σ = 73549880. Its totient is φ = 36774936.

The previous prime is 55162369. The next prime is 55162411. The reversal of 55162407 is 70426155.

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

It is not a de Polignac number, because 55162407 - 2⁷ = 55162279 is a prime.

It is a super-2 number, since 2×55162407² = 6085782292067298, 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 (55162417) 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, 9193732 + ... + 9193737.

It is an arithmetic number, because the mean of its divisors is an integer number (18387470).

Almost surely, 2^55162407 is an apocalyptic number.

55162407 is a deficient number, since it is larger than the sum of its proper divisors (18387473).

55162407 is a wasteful number, since it uses less digits than its factorization.

55162407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18387472.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 55162407 is about 7427.1398936603. The cubic root of 55162407 is about 380.6691970917.

The spelling of 55162407 in words is "fifty-five million, one hundred sixty-two thousand, four hundred seven".