56149289 has 4 divisors (see below), whose sum is σ = 64170624. Its totient is φ = 48127956.

The previous prime is 56149267. The next prime is 56149319. The reversal of 56149289 is 98294165.

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: 98294165 = 5 ⋅19658833.

It is a cyclic number.

It is not a de Polignac number, because 56149289 - 2⁸ = 56149033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56149889) 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, 4010657 + ... + 4010670.

It is an arithmetic number, because the mean of its divisors is an integer number (16042656).

Almost surely, 2^56149289 is an apocalyptic number.

It is an amenable number.

56149289 is a deficient number, since it is larger than the sum of its proper divisors (8021335).

56149289 is an equidigital number, since it uses as much as digits as its factorization.

56149289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8021334.

The product of its digits is 155520, while the sum is 44.

The square root of 56149289 is about 7493.2829253939. The cubic root of 56149289 is about 382.9259105847.

The spelling of 56149289 in words is "fifty-six million, one hundred forty-nine thousand, two hundred eighty-nine".