56091471 has 4 divisors (see below), whose sum is σ = 74788632. Its totient is φ = 37394312.

The previous prime is 56091467. The next prime is 56091527. The reversal of 56091471 is 17419065.

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 56091471 - 2² = 56091467 is a prime.

It is a super-3 number, since 3×56091471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56090471) 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 3 ways as a sum of consecutive naturals, for example, 9348576 + ... + 9348581.

It is an arithmetic number, because the mean of its divisors is an integer number (18697158).

Almost surely, 2^56091471 is an apocalyptic number.

56091471 is a deficient number, since it is larger than the sum of its proper divisors (18697161).

56091471 is a wasteful number, since it uses less digits than its factorization.

56091471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18697160.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 56091471 is about 7489.4239431347. The cubic root of 56091471 is about 382.7944300597.

The spelling of 56091471 in words is "fifty-six million, ninety-one thousand, four hundred seventy-one".