51150515 has 8 divisors (see below), whose sum is σ = 66102288. Its totient is φ = 37772640.

The previous prime is 51150511. The next prime is 51150557. The reversal of 51150515 is 51505115.

It is a happy number.

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

It is not a de Polignac number, because 51150515 - 2² = 51150511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51150511) 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, 393401 + ... + 393530.

It is an arithmetic number, because the mean of its divisors is an integer number (8262786).

Almost surely, 2^51150515 is an apocalyptic number.

51150515 is a deficient number, since it is larger than the sum of its proper divisors (14951773).

51150515 is a wasteful number, since it uses less digits than its factorization.

51150515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786949.

The product of its (nonzero) digits is 625, while the sum is 23.

The square root of 51150515 is about 7151.9588225884. The cubic root of 51150515 is about 371.2074384278.

It can be divided in two parts, 5 and 1150515, that multiplied together give a palindrome (5752575).

The spelling of 51150515 in words is "fifty-one million, one hundred fifty thousand, five hundred fifteen".