50616551 has 4 divisors (see below), whose sum is σ = 53280600. Its totient is φ = 47952504.

The previous prime is 50616541. The next prime is 50616563. The reversal of 50616551 is 15561605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15561605 = 5 ⋅3112321.

It is a de Polignac number, because none of the positive numbers 2^k-50616551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50616541) 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, 1331996 + ... + 1332033.

It is an arithmetic number, because the mean of its divisors is an integer number (13320150).

Almost surely, 2^50616551 is an apocalyptic number.

50616551 is a deficient number, since it is larger than the sum of its proper divisors (2664049).

50616551 is a wasteful number, since it uses less digits than its factorization.

50616551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664048.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 50616551 is about 7114.5309754052. The cubic root of 50616551 is about 369.9112302260.

The spelling of 50616551 in words is "fifty million, six hundred sixteen thousand, five hundred fifty-one".