50507551 has 2 divisors, whose sum is σ = 50507552. Its totient is φ = 50507550.

The previous prime is 50507549. The next prime is 50507581. The reversal of 50507551 is 15570505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50507551 - 2¹ = 50507549 is a prime.

Together with 50507549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50507581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25253775 + 25253776.

It is an arithmetic number, because the mean of its divisors is an integer number (25253776).

Almost surely, 2^50507551 is an apocalyptic number.

50507551 is a deficient number, since it is larger than the sum of its proper divisors (1).

50507551 is an equidigital number, since it uses as much as digits as its factorization.

50507551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4375, while the sum is 28.

The square root of 50507551 is about 7106.8664684233. The cubic root of 50507551 is about 369.6455114672.

The spelling of 50507551 in words is "fifty million, five hundred seven thousand, five hundred fifty-one".