157332449 has 2 divisors, whose sum is σ = 157332450. Its totient is φ = 157332448.

The previous prime is 157332437. The next prime is 157332517. The reversal of 157332449 is 944233751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89434849 + 67897600 = 9457^2 + 8240^2 .

It is an emirp because it is prime and its reverse (944233751) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157332449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (157332419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78666224 + 78666225.

It is an arithmetic number, because the mean of its divisors is an integer number (78666225).

Almost surely, 2^157332449 is an apocalyptic number.

It is an amenable number.

157332449 is a deficient number, since it is larger than the sum of its proper divisors (1).

157332449 is an equidigital number, since it uses as much as digits as its factorization.

157332449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 157332449 is about 12543.2232300952. The cubic root of 157332449 is about 539.8495797312.

The spelling of 157332449 in words is "one hundred fifty-seven million, three hundred thirty-two thousand, four hundred forty-nine".