51371746 has 4 divisors (see below), whose sum is σ = 77057622. Its totient is φ = 25685872.

The previous prime is 51371741. The next prime is 51371783. The reversal of 51371746 is 64717315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48149721 + 3222025 = 6939^2 + 1795^2 .

It is not an unprimeable number, because it can be changed into a prime (51371741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12842935 + ... + 12842938.

Almost surely, 2^51371746 is an apocalyptic number.

51371746 is a deficient number, since it is larger than the sum of its proper divisors (25685876).

51371746 is a wasteful number, since it uses less digits than its factorization.

51371746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25685875.

The product of its digits is 17640, while the sum is 34.

The square root of 51371746 is about 7167.4085972547. The cubic root of 51371746 is about 371.7418382631.

The spelling of 51371746 in words is "fifty-one million, three hundred seventy-one thousand, seven hundred forty-six".