51662662 has 4 divisors (see below), whose sum is σ = 77493996. Its totient is φ = 25831330.

The previous prime is 51662641. The next prime is 51662671. The reversal of 51662662 is 26626615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26626615 = 5 ⋅5325323.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12915664 + ... + 12915667.

It is an arithmetic number, because the mean of its divisors is an integer number (19373499).

Almost surely, 2^51662662 is an apocalyptic number.

51662662 is a deficient number, since it is larger than the sum of its proper divisors (25831334).

51662662 is a wasteful number, since it uses less digits than its factorization.

51662662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25831333.

The product of its digits is 25920, while the sum is 34.

The square root of 51662662 is about 7187.6743109298. The cubic root of 51662662 is about 372.4422371884.

The spelling of 51662662 in words is "fifty-one million, six hundred sixty-two thousand, six hundred sixty-two".