157740799 has 2 divisors, whose sum is σ = 157740800. Its totient is φ = 157740798.

The previous prime is 157740797. The next prime is 157740823. The reversal of 157740799 is 997047751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157740799 - 2¹ = 157740797 is a prime.

Together with 157740797, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157740797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78870399 + 78870400.

It is an arithmetic number, because the mean of its divisors is an integer number (78870400).

Almost surely, 2^157740799 is an apocalyptic number.

157740799 is a deficient number, since it is larger than the sum of its proper divisors (1).

157740799 is an equidigital number, since it uses as much as digits as its factorization.

157740799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 555660, while the sum is 49.

The square root of 157740799 is about 12559.4903957127. The cubic root of 157740799 is about 540.3162288149.

The spelling of 157740799 in words is "one hundred fifty-seven million, seven hundred forty thousand, seven hundred ninety-nine".