56649471 has 4 divisors (see below), whose sum is σ = 75532632. Its totient is φ = 37766312.

The previous prime is 56649451. The next prime is 56649487. The reversal of 56649471 is 17494665.

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 56649471 - 2⁶ = 56649407 is a prime.

It is a super-3 number, since 3×56649471³ (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 (56649401) 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, 9441576 + ... + 9441581.

It is an arithmetic number, because the mean of its divisors is an integer number (18883158).

Almost surely, 2^56649471 is an apocalyptic number.

56649471 is a deficient number, since it is larger than the sum of its proper divisors (18883161).

56649471 is a wasteful number, since it uses less digits than its factorization.

56649471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18883160.

The product of its digits is 181440, while the sum is 42.

The square root of 56649471 is about 7526.5842850525. The cubic root of 56649471 is about 384.0595949716.

The spelling of 56649471 in words is "fifty-six million, six hundred forty-nine thousand, four hundred seventy-one".