56247345 has 96 divisors (see below), whose sum is σ = 127059840. Its totient is φ = 23345280.

The previous prime is 56247337. The next prime is 56247383. The reversal of 56247345 is 54374265.

It is not a de Polignac number, because 56247345 - 2³ = 56247337 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 72379 + ... + 73151.

It is an arithmetic number, because the mean of its divisors is an integer number (1323540).

Almost surely, 2^56247345 is an apocalyptic number.

56247345 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56247345 is an abundant number, since it is smaller than the sum of its proper divisors (70812495).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56247345 is a wasteful number, since it uses less digits than its factorization.

56247345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 799 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 56247345 is about 7499.8229979114. The cubic root of 56247345 is about 383.1486878011.

Subtracting from 56247345 its reverse (54374265), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 56247345 in words is "fifty-six million, two hundred forty-seven thousand, three hundred forty-five".