51662090 has 8 divisors (see below), whose sum is σ = 92991780. Its totient is φ = 20664832.

The previous prime is 51662069. The next prime is 51662113. The reversal of 51662090 is 9026615.

It can be written as a sum of positive squares in 2 ways, for example, as 47348161 + 4313929 = 6881^2 + 2077^2 .

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

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, 2583095 + ... + 2583114.

Almost surely, 2^51662090 is an apocalyptic number.

51662090 is a deficient number, since it is larger than the sum of its proper divisors (41329690).

51662090 is a wasteful number, since it uses less digits than its factorization.

51662090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5166216.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 51662090 is about 7187.6345204803. The cubic root of 51662090 is about 372.4408626448.

The spelling of 51662090 in words is "fifty-one million, six hundred sixty-two thousand, ninety".