51692740 has 24 divisors (see below), whose sum is σ = 118423872. Its totient is φ = 18797280.

The previous prime is 51692701. The next prime is 51692741. The reversal of 51692740 is 4729615.

It is a junction number, because it is equal to n+sod(n) for n = 51692696 and 51692705.

It is not an unprimeable number, because it can be changed into a prime (51692741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117264 + ... + 117703.

It is an arithmetic number, because the mean of its divisors is an integer number (4934328).

Almost surely, 2^51692740 is an apocalyptic number.

It is an amenable number.

51692740 is an abundant number, since it is smaller than the sum of its proper divisors (66731132).

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

51692740 is a wasteful number, since it uses less digits than its factorization.

51692740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234987 (or 234985 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 51692740 is about 7189.7663383451. The cubic root of 51692740 is about 372.5145017852.

The spelling of 51692740 in words is "fifty-one million, six hundred ninety-two thousand, seven hundred forty".