51261190 has 16 divisors (see below), whose sum is σ = 92456640. Its totient is φ = 20463040.

The previous prime is 51261187. The next prime is 51261209. The reversal of 51261190 is 9116215.

It is a super-2 number, since 2×51261190² = 5255419200432200, which contains 22 as substring.

It is a congruent number.

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, 291 + ... + 10129.

It is an arithmetic number, because the mean of its divisors is an integer number (5778540).

Almost surely, 2^51261190 is an apocalyptic number.

51261190 is a deficient number, since it is larger than the sum of its proper divisors (41195450).

51261190 is a wasteful number, since it uses less digits than its factorization.

51261190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10367.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 51261190 is about 7159.6920324830. The cubic root of 51261190 is about 371.4749742674.

The spelling of 51261190 in words is "fifty-one million, two hundred sixty-one thousand, one hundred ninety".