51642610 has 8 divisors (see below), whose sum is σ = 92956716. Its totient is φ = 20657040.

The previous prime is 51642601. The next prime is 51642623. The reversal of 51642610 is 1624615.

It can be written as a sum of positive squares in 2 ways, for example, as 49970761 + 1671849 = 7069^2 + 1293^2 .

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

It is a super-2 number, since 2×51642610² = 5333918335224200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2582121 + ... + 2582140.

Almost surely, 2^51642610 is an apocalyptic number.

51642610 is a deficient number, since it is larger than the sum of its proper divisors (41314106).

51642610 is a wasteful number, since it uses less digits than its factorization.

51642610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5164268.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51642610 is about 7186.2792876425. The cubic root of 51642610 is about 372.3940452068.

The spelling of 51642610 in words is "fifty-one million, six hundred forty-two thousand, six hundred ten".