56731471 has 4 divisors (see below), whose sum is σ = 58264792. Its totient is φ = 55198152.

The previous prime is 56731447. The next prime is 56731483. The reversal of 56731471 is 17413765.

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 56731471 - 2⁹ = 56730959 is a prime.

It is a super-3 number, since 3×56731471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56731421) 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, 766605 + ... + 766678.

It is an arithmetic number, because the mean of its divisors is an integer number (14566198).

Almost surely, 2^56731471 is an apocalyptic number.

56731471 is a deficient number, since it is larger than the sum of its proper divisors (1533321).

56731471 is a wasteful number, since it uses less digits than its factorization.

56731471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533320.

The product of its digits is 17640, while the sum is 34.

The square root of 56731471 is about 7532.0296733351. The cubic root of 56731471 is about 384.2448141398.

The spelling of 56731471 in words is "fifty-six million, seven hundred thirty-one thousand, four hundred seventy-one".