50551511 has 2 divisors, whose sum is σ = 50551512. Its totient is φ = 50551510.

The previous prime is 50551477. The next prime is 50551513. The reversal of 50551511 is 11515505.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50551511 - 2¹⁸ = 50289367 is a prime.

Together with 50551513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50551513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25275755 + 25275756.

It is an arithmetic number, because the mean of its divisors is an integer number (25275756).

Almost surely, 2^50551511 is an apocalyptic number.

50551511 is a deficient number, since it is larger than the sum of its proper divisors (1).

50551511 is an equidigital number, since it uses as much as digits as its factorization.

50551511 is an evil number, because the sum of its binary digits is even.

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

The square root of 50551511 is about 7109.9585793449. The cubic root of 50551511 is about 369.7527225296.

The spelling of 50551511 in words is "fifty million, five hundred fifty-one thousand, five hundred eleven".