51993153 has 6 divisors (see below), whose sum is σ = 75101234. Its totient is φ = 34662096.

The previous prime is 51993113. The next prime is 51993163. The reversal of 51993153 is 35139915.

51993153 is a `hidden beast` number, since 519 + 93 + 1 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51365889 + 627264 = 7167^2 + 792^2 .

It is not a de Polignac number, because 51993153 - 2⁹ = 51992641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51993113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2888500 + ... + 2888517.

Almost surely, 2^51993153 is an apocalyptic number.

It is an amenable number.

51993153 is a deficient number, since it is larger than the sum of its proper divisors (23108081).

51993153 is a wasteful number, since it uses less digits than its factorization.

51993153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5777023 (or 5777020 counting only the distinct ones).

The product of its digits is 18225, while the sum is 36.

The square root of 51993153 is about 7210.6277812684. The cubic root of 51993153 is about 373.2347325883.

The spelling of 51993153 in words is "fifty-one million, nine hundred ninety-three thousand, one hundred fifty-three".