50409977 has 2 divisors, whose sum is σ = 50409978. Its totient is φ = 50409976.

The previous prime is 50409949. The next prime is 50410001. The reversal of 50409977 is 77990405.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42367081 + 8042896 = 6509^2 + 2836^2 .

It is a cyclic number.

It is not a de Polignac number, because 50409977 - 2¹⁸ = 50147833 is a prime.

It is a super-2 number, since 2×50409977² = 5082331562281058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50489977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25204988 + 25204989.

It is an arithmetic number, because the mean of its divisors is an integer number (25204989).

Almost surely, 2^50409977 is an apocalyptic number.

It is an amenable number.

50409977 is a deficient number, since it is larger than the sum of its proper divisors (1).

50409977 is an equidigital number, since it uses as much as digits as its factorization.

50409977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 50409977 is about 7099.9983802815. The cubic root of 50409977 is about 369.4073223815.

The spelling of 50409977 in words is "fifty million, four hundred nine thousand, nine hundred seventy-seven".