49319657 has 2 divisors, whose sum is σ = 49319658. Its totient is φ = 49319656.

The previous prime is 49319651. The next prime is 49319689. The reversal of 49319657 is 75691394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34234201 + 15085456 = 5851^2 + 3884^2 .

It is a cyclic number.

It is not a de Polignac number, because 49319657 - 2¹⁴ = 49303273 is a prime.

It is not a weakly prime, because it can be changed into another prime (49319651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24659828 + 24659829.

It is an arithmetic number, because the mean of its divisors is an integer number (24659829).

Almost surely, 2^49319657 is an apocalyptic number.

It is an amenable number.

49319657 is a deficient number, since it is larger than the sum of its proper divisors (1).

49319657 is an equidigital number, since it uses as much as digits as its factorization.

49319657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 44.

The square root of 49319657 is about 7022.7955259996. The cubic root of 49319657 is about 366.7245766202.

The spelling of 49319657 in words is "forty-nine million, three hundred nineteen thousand, six hundred fifty-seven".