50157661 has 2 divisors, whose sum is σ = 50157662. Its totient is φ = 50157660.

The previous prime is 50157631. The next prime is 50157671. The reversal of 50157661 is 16675105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39879225 + 10278436 = 6315^2 + 3206^2 .

It is a cyclic number.

It is not a de Polignac number, because 50157661 - 2⁵ = 50157629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50157631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25078830 + 25078831.

It is an arithmetic number, because the mean of its divisors is an integer number (25078831).

Almost surely, 2^50157661 is an apocalyptic number.

It is an amenable number.

50157661 is a deficient number, since it is larger than the sum of its proper divisors (1).

50157661 is an equidigital number, since it uses as much as digits as its factorization.

50157661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 50157661 is about 7082.2073536434. The cubic root of 50157661 is about 368.7899623070.

The spelling of 50157661 in words is "fifty million, one hundred fifty-seven thousand, six hundred sixty-one".