56061731 has 8 divisors (see below), whose sum is σ = 61535424. Its totient is φ = 50650920.

The previous prime is 56061721. The next prime is 56061739. The reversal of 56061731 is 13716065.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56061731 is a prime.

It is a super-2 number, since 2×56061731² = 6285835365432722, 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 = 56061694 and 56061703.

It is not an unprimeable number, because it can be changed into a prime (56061739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13841 + ... + 17426.

It is an arithmetic number, because the mean of its divisors is an integer number (7691928).

Almost surely, 2^56061731 is an apocalyptic number.

56061731 is a deficient number, since it is larger than the sum of its proper divisors (5473693).

56061731 is a wasteful number, since it uses less digits than its factorization.

56061731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31441.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 56061731 is about 7487.4382134346. The cubic root of 56061731 is about 382.7267648767.

Adding to 56061731 its reverse (13716065), we get a palindrome (69777796).

It can be divided in two parts, 5606 and 1731, that added together give a palindrome (7337).

The spelling of 56061731 in words is "fifty-six million, sixty-one thousand, seven hundred thirty-one".