51440674 has 8 divisors (see below), whose sum is σ = 81699948. Its totient is φ = 24207360.

The previous prime is 51440671. The next prime is 51440677. The reversal of 51440674 is 47604415.

It is an interprime number because it is at equal distance from previous prime (51440671) and next prime (51440677).

It can be written as a sum of positive squares in 2 ways, for example, as 50509449 + 931225 = 7107^2 + 965^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51440674² = 5292285883148552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51440671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756447 + ... + 756514.

Almost surely, 2^51440674 is an apocalyptic number.

51440674 is a deficient number, since it is larger than the sum of its proper divisors (30259274).

51440674 is a wasteful number, since it uses less digits than its factorization.

51440674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512980.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 51440674 is about 7172.2154178468. The cubic root of 51440674 is about 371.9080253983.

The spelling of 51440674 in words is "fifty-one million, four hundred forty thousand, six hundred seventy-four".