51490695 has 8 divisors (see below), whose sum is σ = 82385136. Its totient is φ = 27461696.

The previous prime is 51490667. The next prime is 51490697. The reversal of 51490695 is 59609415.

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

It is a cyclic number.

It is not a de Polignac number, because 51490695 - 2¹⁰ = 51489671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51490697) 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, 1716342 + ... + 1716371.

It is an arithmetic number, because the mean of its divisors is an integer number (10298142).

Almost surely, 2^51490695 is an apocalyptic number.

51490695 is a deficient number, since it is larger than the sum of its proper divisors (30894441).

51490695 is a wasteful number, since it uses less digits than its factorization.

51490695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3432721.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 51490695 is about 7175.7017078471. The cubic root of 51490695 is about 372.0285343472.

The spelling of 51490695 in words is "fifty-one million, four hundred ninety thousand, six hundred ninety-five".