56891245 has 8 divisors (see below), whose sum is σ = 68465016. Its totient is φ = 45382656.

The previous prime is 56891221. The next prime is 56891249. The reversal of 56891245 is 54219865.

It can be written as a sum of positive squares in 4 ways, for example, as 8491396 + 48399849 = 2914^2 + 6957^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56891245 - 2⁷ = 56891117 is a prime.

It is a super-2 number, since 2×56891245² = 6473227515300050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56891198 and 56891207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56891249) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14352 + ... + 17881.

It is an arithmetic number, because the mean of its divisors is an integer number (8558127).

Almost surely, 2^56891245 is an apocalyptic number.

It is an amenable number.

56891245 is a deficient number, since it is larger than the sum of its proper divisors (11573771).

56891245 is a wasteful number, since it uses less digits than its factorization.

56891245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32591.

The product of its digits is 86400, while the sum is 40.

The square root of 56891245 is about 7542.6285206153. The cubic root of 56891245 is about 384.6051948736.

The spelling of 56891245 in words is "fifty-six million, eight hundred ninety-one thousand, two hundred forty-five".