51420692 has 12 divisors (see below), whose sum is σ = 92889216. Its totient is φ = 24880920.

The previous prime is 51420673. The next prime is 51420701. The reversal of 51420692 is 29602415.

It is a happy number.

It is a congruent number.

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, 207218 + ... + 207465.

It is an arithmetic number, because the mean of its divisors is an integer number (7740768).

Almost surely, 2^51420692 is an apocalyptic number.

It is an amenable number.

51420692 is a deficient number, since it is larger than the sum of its proper divisors (41468524).

51420692 is a wasteful number, since it uses less digits than its factorization.

51420692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414718 (or 414716 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 51420692 is about 7170.8222680527. The cubic root of 51420692 is about 371.8598635837.

The spelling of 51420692 in words is "fifty-one million, four hundred twenty thousand, six hundred ninety-two".