51615377 has 8 divisors (see below), whose sum is σ = 56368992. Its totient is φ = 46872000.

The previous prime is 51615373. The next prime is 51615397. The reversal of 51615377 is 77351615.

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

It is a cyclic number.

It is not a de Polignac number, because 51615377 - 2² = 51615373 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51615371) 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, 11258 + ... + 15164.

It is an arithmetic number, because the mean of its divisors is an integer number (7046124).

Almost surely, 2^51615377 is an apocalyptic number.

It is an amenable number.

51615377 is a deficient number, since it is larger than the sum of its proper divisors (4753615).

51615377 is a wasteful number, since it uses less digits than its factorization.

51615377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5119.

The product of its digits is 22050, while the sum is 35.

The square root of 51615377 is about 7184.3842464055. The cubic root of 51615377 is about 372.3285747861.

The spelling of 51615377 in words is "fifty-one million, six hundred fifteen thousand, three hundred seventy-seven".