51151497 has 8 divisors (see below), whose sum is σ = 68488320. Its totient is φ = 33957840.

The previous prime is 51151493. The next prime is 51151523. The reversal of 51151497 is 79415115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51151497 - 2² = 51151493 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (51151493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34954 + ... + 36387.

It is an arithmetic number, because the mean of its divisors is an integer number (8561040).

Almost surely, 2^51151497 is an apocalyptic number.

It is an amenable number.

51151497 is a deficient number, since it is larger than the sum of its proper divisors (17336823).

51151497 is a wasteful number, since it uses less digits than its factorization.

51151497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71583.

The product of its digits is 6300, while the sum is 33.

The square root of 51151497 is about 7152.0274747794. The cubic root of 51151497 is about 371.2098139227.

The spelling of 51151497 in words is "fifty-one million, one hundred fifty-one thousand, four hundred ninety-seven".