56402623 has 4 divisors (see below), whose sum is σ = 56438320. Its totient is φ = 56366928.

The previous prime is 56402611. The next prime is 56402629. The reversal of 56402623 is 32620465.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32620465 = 5 ⋅6524093.

It is a cyclic number.

It is not a de Polignac number, because 56402623 - 2²⁵ = 22848191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56402591 and 56402600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56402629) 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, 15363 + ... + 18676.

It is an arithmetic number, because the mean of its divisors is an integer number (14109580).

Almost surely, 2^56402623 is an apocalyptic number.

56402623 is a deficient number, since it is larger than the sum of its proper divisors (35697).

56402623 is a wasteful number, since it uses less digits than its factorization.

56402623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35696.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 56402623 is about 7510.1679741534. The cubic root of 56402623 is about 383.5009408618.

The spelling of 56402623 in words is "fifty-six million, four hundred two thousand, six hundred twenty-three".