157037249 has 2 divisors, whose sum is σ = 157037250. Its totient is φ = 157037248.

The previous prime is 157037239. The next prime is 157037263. The reversal of 157037249 is 942730751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90859024 + 66178225 = 9532^2 + 8135^2 .

It is an emirp because it is prime and its reverse (942730751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157037249 - 2¹² = 157033153 is a prime.

It is not a weakly prime, because it can be changed into another prime (157037219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78518624 + 78518625.

It is an arithmetic number, because the mean of its divisors is an integer number (78518625).

Almost surely, 2^157037249 is an apocalyptic number.

It is an amenable number.

157037249 is a deficient number, since it is larger than the sum of its proper divisors (1).

157037249 is an equidigital number, since it uses as much as digits as its factorization.

157037249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 157037249 is about 12531.4503949064. The cubic root of 157037249 is about 539.5117317087.

The spelling of 157037249 in words is "one hundred fifty-seven million, thirty-seven thousand, two hundred forty-nine".