56129487 has 8 divisors (see below), whose sum is σ = 74874240. Its totient is φ = 37402200.

The previous prime is 56129483. The next prime is 56129501. The reversal of 56129487 is 78492165.

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

It is not a de Polignac number, because 56129487 - 2² = 56129483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56129483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8862 + ... + 13812.

It is an arithmetic number, because the mean of its divisors is an integer number (9359280).

Almost surely, 2^56129487 is an apocalyptic number.

56129487 is a deficient number, since it is larger than the sum of its proper divisors (18744753).

56129487 is a wasteful number, since it uses less digits than its factorization.

56129487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8733.

The product of its digits is 120960, while the sum is 42.

The square root of 56129487 is about 7491.9614921594. The cubic root of 56129487 is about 382.8808901841.

It can be divided in two parts, 56129 and 487, that added together give a triangular number (56616 = T₃₃₆).

The spelling of 56129487 in words is "fifty-six million, one hundred twenty-nine thousand, four hundred eighty-seven".