51351351 has 4 divisors (see below), whose sum is σ = 68468472. Its totient is φ = 34234232.

The previous prime is 51351253. The next prime is 51351359. The reversal of 51351351 is 15315315.

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

It is a cyclic number.

It is not a de Polignac number, because 51351351 - 2⁹ = 51350839 is a prime.

It is a super-2 number, since 2×51351351² = 5273922499050402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51351359) 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, 8558556 + ... + 8558561.

It is an arithmetic number, because the mean of its divisors is an integer number (17117118).

Almost surely, 2^51351351 is an apocalyptic number.

51351351 is a deficient number, since it is larger than the sum of its proper divisors (17117121).

51351351 is a wasteful number, since it uses less digits than its factorization.

51351351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17117120.

The product of its digits is 1125, while the sum is 24.

The square root of 51351351 is about 7165.9856963296. The cubic root of 51351351 is about 371.6926369094.

Adding to 51351351 its reverse (15315315), we get a palindrome (66666666).

The spelling of 51351351 in words is "fifty-one million, three hundred fifty-one thousand, three hundred fifty-one".