56245551 has 16 divisors (see below), whose sum is σ = 77007360. Its totient is φ = 36504000.

The previous prime is 56245549. The next prime is 56245583. The reversal of 56245551 is 15554265.

It is not a de Polignac number, because 56245551 - 2¹ = 56245549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56245451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15676 + ... + 18926.

It is an arithmetic number, because the mean of its divisors is an integer number (4812960).

Almost surely, 2^56245551 is an apocalyptic number.

56245551 is a deficient number, since it is larger than the sum of its proper divisors (20761809).

56245551 is a wasteful number, since it uses less digits than its factorization.

56245551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406.

The product of its digits is 30000, while the sum is 33.

The square root of 56245551 is about 7499.7033941350. The cubic root of 56245551 is about 383.1446142692.

It can be divided in two parts, 5624 and 5551, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 56245551 in words is "fifty-six million, two hundred forty-five thousand, five hundred fifty-one".