51392061 has 24 divisors (see below), whose sum is σ = 85600320. Its totient is φ = 29102976.

The previous prime is 51392059. The next prime is 51392063. The reversal of 51392061 is 16029315.

51392061 is a `hidden beast` number, since 513 + 92 + 0 + 61 = 666.

It is an interprime number because it is at equal distance from previous prime (51392059) and next prime (51392063).

It is not a de Polignac number, because 51392061 - 2¹ = 51392059 is a prime.

It is a super-2 number, since 2×51392061² = 5282287867655442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51392063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3510 + ... + 10728.

It is an arithmetic number, because the mean of its divisors is an integer number (3566680).

Almost surely, 2^51392061 is an apocalyptic number.

It is an amenable number.

51392061 is a deficient number, since it is larger than the sum of its proper divisors (34208259).

51392061 is a wasteful number, since it uses less digits than its factorization.

51392061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7345 (or 7342 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 51392061 is about 7168.8256360439. The cubic root of 51392061 is about 371.7908336791.

The spelling of 51392061 in words is "fifty-one million, three hundred ninety-two thousand, sixty-one".