51900006 has 32 divisors (see below), whose sum is σ = 109859328. Its totient is φ = 16311680.

The previous prime is 51899987. The next prime is 51900019. The reversal of 51900006 is 60000915.

It is a super-2 number, since 2×51900006² = 5387221245600072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7150 + ... + 12446.

It is an arithmetic number, because the mean of its divisors is an integer number (3433104).

Almost surely, 2^51900006 is an apocalyptic number.

51900006 is an abundant number, since it is smaller than the sum of its proper divisors (57959322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51900006 is a wasteful number, since it uses less digits than its factorization.

51900006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5396.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 51900006 is about 7204.1658781569. The cubic root of 51900006 is about 373.0117129821.

The spelling of 51900006 in words is "fifty-one million, nine hundred thousand, six".