51167493 has 24 divisors (see below), whose sum is σ = 80112032. Its totient is φ = 31282848.

The previous prime is 51167483. The next prime is 51167497. The reversal of 51167493 is 39476115.

51167493 is a `hidden beast` number, since 5 + 1 + 167 + 493 = 666.

It is not a de Polignac number, because 51167493 - 2⁵ = 51167461 is a prime.

It is a super-2 number, since 2×51167493² = 5236224679810098, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51167497) 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, 17730 + ... + 20412.

Almost surely, 2^51167493 is an apocalyptic number.

It is an amenable number.

51167493 is a deficient number, since it is larger than the sum of its proper divisors (28944539).

51167493 is a wasteful number, since it uses less digits than its factorization.

51167493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865 (or 2862 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 51167493 is about 7153.1456716608. The cubic root of 51167493 is about 371.2485045683.

The spelling of 51167493 in words is "fifty-one million, one hundred sixty-seven thousand, four hundred ninety-three".