51662998 has 12 divisors (see below), whose sum is σ = 78506820. Its totient is φ = 25498356.

The previous prime is 51662977. The next prime is 51663023. The reversal of 51662998 is 89926615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10413 + ... + 14551.

It is an arithmetic number, because the mean of its divisors is an integer number (6542235).

Almost surely, 2^51662998 is an apocalyptic number.

51662998 is a deficient number, since it is larger than the sum of its proper divisors (26843822).

51662998 is an equidigital number, since it uses as much as digits as its factorization.

51662998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4299 (or 4220 counting only the distinct ones).

The product of its digits is 233280, while the sum is 46.

The square root of 51662998 is about 7187.6976842380. The cubic root of 51662998 is about 372.4430446079.

The spelling of 51662998 in words is "fifty-one million, six hundred sixty-two thousand, nine hundred ninety-eight".