49542397 has 2 divisors, whose sum is σ = 49542398. Its totient is φ = 49542396.

The previous prime is 49542377. The next prime is 49542421. The reversal of 49542397 is 79324594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43811161 + 5731236 = 6619^2 + 2394^2 .

It is a cyclic number.

It is not a de Polignac number, because 49542397 - 2¹¹ = 49540349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49542307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24771198 + 24771199.

It is an arithmetic number, because the mean of its divisors is an integer number (24771199).

Almost surely, 2^49542397 is an apocalyptic number.

It is an amenable number.

49542397 is a deficient number, since it is larger than the sum of its proper divisors (1).

49542397 is an equidigital number, since it uses as much as digits as its factorization.

49542397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 49542397 is about 7038.6360184343. The cubic root of 49542397 is about 367.2758211334.

The spelling of 49542397 in words is "forty-nine million, five hundred forty-two thousand, three hundred ninety-seven".