50861517 has 16 divisors (see below), whose sum is σ = 77642880. Its totient is φ = 29011392.

The previous prime is 50861513. The next prime is 50861521. The reversal of 50861517 is 71516805.

It is an interprime number because it is at equal distance from previous prime (50861513) and next prime (50861521).

It is not a de Polignac number, because 50861517 - 2² = 50861513 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50861513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11859 + ... + 15567.

It is an arithmetic number, because the mean of its divisors is an integer number (4852680).

Almost surely, 2^50861517 is an apocalyptic number.

It is an amenable number.

50861517 is a deficient number, since it is larger than the sum of its proper divisors (26781363).

50861517 is a wasteful number, since it uses less digits than its factorization.

50861517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372.

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 50861517 is about 7131.7260884024. The cubic root of 50861517 is about 370.5070161361.

The spelling of 50861517 in words is "fifty million, eight hundred sixty-one thousand, five hundred seventeen".