56981030 has 16 divisors (see below), whose sum is σ = 103106304. Its totient is φ = 22672320.

The previous prime is 56981003. The next prime is 56981033. The reversal of 56981030 is 3018965.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56981033) 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, 13007 + ... + 16826.

It is an arithmetic number, because the mean of its divisors is an integer number (6444144).

Almost surely, 2^56981030 is an apocalyptic number.

56981030 is a deficient number, since it is larger than the sum of its proper divisors (46125274).

56981030 is a wasteful number, since it uses less digits than its factorization.

56981030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30031.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 56981030 is about 7548.5780117847. The cubic root of 56981030 is about 384.8074147844.

Adding to 56981030 its reverse (3018965), we get a palindrome (59999995).

The spelling of 56981030 in words is "fifty-six million, nine hundred eighty-one thousand, thirty".