51534151 has 4 divisors (see below), whose sum is σ = 51862552. Its totient is φ = 51205752.

The previous prime is 51534127. The next prime is 51534163. The reversal of 51534151 is 15143515.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51534151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51534101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163965 + ... + 164278.

It is an arithmetic number, because the mean of its divisors is an integer number (12965638).

Almost surely, 2^51534151 is an apocalyptic number.

51534151 is a deficient number, since it is larger than the sum of its proper divisors (328401).

51534151 is a wasteful number, since it uses less digits than its factorization.

51534151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328400.

The product of its digits is 1500, while the sum is 25.

The square root of 51534151 is about 7178.7290657887. The cubic root of 51534151 is about 372.1331637763.

Adding to 51534151 its reverse (15143515), we get a palindrome (66677666).

The spelling of 51534151 in words is "fifty-one million, five hundred thirty-four thousand, one hundred fifty-one".