157207249 has 2 divisors, whose sum is σ = 157207250. Its totient is φ = 157207248.

The previous prime is 157207213. The next prime is 157207291. The reversal of 157207249 is 942702751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155750400 + 1456849 = 12480^2 + 1207^2 .

It is a cyclic number.

It is not a de Polignac number, because 157207249 - 2¹³ = 157199057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (157207549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78603624 + 78603625.

It is an arithmetic number, because the mean of its divisors is an integer number (78603625).

Almost surely, 2^157207249 is an apocalyptic number.

It is an amenable number.

157207249 is a deficient number, since it is larger than the sum of its proper divisors (1).

157207249 is an equidigital number, since it uses as much as digits as its factorization.

157207249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 157207249 is about 12538.2314941143. The cubic root of 157207249 is about 539.7063435369.

The spelling of 157207249 in words is "one hundred fifty-seven million, two hundred seven thousand, two hundred forty-nine".