56138469 has 8 divisors (see below), whose sum is σ = 78105792. Its totient is φ = 35798400.

The previous prime is 56138443. The next prime is 56138473. The reversal of 56138469 is 96483165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56138469 - 2⁹ = 56137957 is a prime.

It is a super-2 number, since 2×56138469² = 6303055403327922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56138469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56138479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406732 + ... + 406869.

It is an arithmetic number, because the mean of its divisors is an integer number (9763224).

Almost surely, 2^56138469 is an apocalyptic number.

It is an amenable number.

56138469 is a deficient number, since it is larger than the sum of its proper divisors (21967323).

56138469 is a wasteful number, since it uses less digits than its factorization.

56138469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813627.

The product of its digits is 155520, while the sum is 42.

The square root of 56138469 is about 7492.5609106633. The cubic root of 56138469 is about 382.9013123242.

The spelling of 56138469 in words is "fifty-six million, one hundred thirty-eight thousand, four hundred sixty-nine".