51546731 has 2 divisors, whose sum is σ = 51546732. Its totient is φ = 51546730.

The previous prime is 51546727. The next prime is 51546739. The reversal of 51546731 is 13764515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51546731 - 2² = 51546727 is a prime.

It is a super-2 number, since 2×51546731² = 5314130953572722, which contains 22 as substring.

It is equal to p_3088274 and since 51546731 and 3088274 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (51546739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25773365 + 25773366.

It is an arithmetic number, because the mean of its divisors is an integer number (25773366).

Almost surely, 2^51546731 is an apocalyptic number.

51546731 is a deficient number, since it is larger than the sum of its proper divisors (1).

51546731 is an equidigital number, since it uses as much as digits as its factorization.

51546731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 32.

The square root of 51546731 is about 7179.6052119876. The cubic root of 51546731 is about 372.1634417844.

The spelling of 51546731 in words is "fifty-one million, five hundred forty-six thousand, seven hundred thirty-one".