55981010 has 16 divisors (see below), whose sum is σ = 101981376. Its totient is φ = 22122288.

The previous prime is 55980971. The next prime is 55981067. The reversal of 55981010 is 1018955.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32894 + ... + 34553.

It is an arithmetic number, because the mean of its divisors is an integer number (6373836).

Almost surely, 2^55981010 is an apocalyptic number.

55981010 is a deficient number, since it is larger than the sum of its proper divisors (46000366).

55981010 is a wasteful number, since it uses less digits than its factorization.

55981010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67537.

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 55981010 is about 7482.0458432169. The cubic root of 55981010 is about 382.5429857567.

Adding to 55981010 its reverse (1018955), we get a palindrome (56999965).

The spelling of 55981010 in words is "fifty-five million, nine hundred eighty-one thousand, ten".