56429515 has 4 divisors (see below), whose sum is σ = 67715424. Its totient is φ = 45143608.

The previous prime is 56429509. The next prime is 56429539. The reversal of 56429515 is 51592465.

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

It is a cyclic number.

It is not a de Polignac number, because 56429515 - 2¹⁷ = 56298443 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5642947 + ... + 5642956.

It is an arithmetic number, because the mean of its divisors is an integer number (16928856).

Almost surely, 2^56429515 is an apocalyptic number.

56429515 is a deficient number, since it is larger than the sum of its proper divisors (11285909).

56429515 is a wasteful number, since it uses less digits than its factorization.

56429515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11285908.

The product of its digits is 54000, while the sum is 37.

The square root of 56429515 is about 7511.9581335362. The cubic root of 56429515 is about 383.5618805140.

The spelling of 56429515 in words is "fifty-six million, four hundred twenty-nine thousand, five hundred fifteen".