56261730 has 32 divisors (see below), whose sum is σ = 154318464. Its totient is φ = 12859776.

The previous prime is 56261729. The next prime is 56261731. The reversal of 56261730 is 3716265.

It is an interprime number because it is at equal distance from previous prime (56261729) and next prime (56261731).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56261731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133747 + ... + 134166.

It is an arithmetic number, because the mean of its divisors is an integer number (4822452).

Almost surely, 2^56261730 is an apocalyptic number.

56261730 is an abundant number, since it is smaller than the sum of its proper divisors (98056734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56261730 is a wasteful number, since it uses less digits than its factorization.

56261730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267930.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 56261730 is about 7500.7819592360. The cubic root of 56261730 is about 383.1813478557.

Adding to 56261730 its reverse (3716265), we get a palindrome (59977995).

The spelling of 56261730 in words is "fifty-six million, two hundred sixty-one thousand, seven hundred thirty".