127157497 has 4 divisors (see below), whose sum is σ = 127181556. Its totient is φ = 127133440.

The previous prime is 127157479. The next prime is 127157507. The reversal of 127157497 is 794751721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74580496 + 52577001 = 8636^2 + 7251^2 .

It is a cyclic number.

It is not a de Polignac number, because 127157497 - 2⁷ = 127157369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127157447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268 + ... + 15949.

It is an arithmetic number, because the mean of its divisors is an integer number (31795389).

Almost surely, 2^127157497 is an apocalyptic number.

It is an amenable number.

127157497 is a deficient number, since it is larger than the sum of its proper divisors (24059).

127157497 is an equidigital number, since it uses as much as digits as its factorization.

127157497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24058.

The product of its digits is 123480, while the sum is 43.

The square root of 127157497 is about 11276.4133038835. The cubic root of 127157497 is about 502.8602691867.

The spelling of 127157497 in words is "one hundred twenty-seven million, one hundred fifty-seven thousand, four hundred ninety-seven".