247450157 has 2 divisors, whose sum is σ = 247450158. Its totient is φ = 247450156.

The previous prime is 247450121. The next prime is 247450207. The reversal of 247450157 is 751054742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204232681 + 43217476 = 14291^2 + 6574^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247450157 is a prime.

It is a super-2 number, since 2×247450157² = 122463160398649298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247455157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123725078 + 123725079.

It is an arithmetic number, because the mean of its divisors is an integer number (123725079).

Almost surely, 2^247450157 is an apocalyptic number.

It is an amenable number.

247450157 is a deficient number, since it is larger than the sum of its proper divisors (1).

247450157 is an equidigital number, since it uses as much as digits as its factorization.

247450157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39200, while the sum is 35.

The square root of 247450157 is about 15730.5485282618. The cubic root of 247450157 is about 627.8114680457.

The spelling of 247450157 in words is "two hundred forty-seven million, four hundred fifty thousand, one hundred fifty-seven".