50778401 has 2 divisors, whose sum is σ = 50778402. Its totient is φ = 50778400.

The previous prime is 50778397. The next prime is 50778421. The reversal of 50778401 is 10487705.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28462225 + 22316176 = 5335^2 + 4724^2 .

It is a cyclic number.

It is not a de Polignac number, because 50778401 - 2² = 50778397 is a prime.

It is not a weakly prime, because it can be changed into another prime (50778421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25389200 + 25389201.

It is an arithmetic number, because the mean of its divisors is an integer number (25389201).

Almost surely, 2^50778401 is an apocalyptic number.

It is an amenable number.

50778401 is a deficient number, since it is larger than the sum of its proper divisors (1).

50778401 is an equidigital number, since it uses as much as digits as its factorization.

50778401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 50778401 is about 7125.8965050020. The cubic root of 50778401 is about 370.3050831691.

The spelling of 50778401 in words is "fifty million, seven hundred seventy-eight thousand, four hundred one".