245656157 has 2 divisors, whose sum is σ = 245656158. Its totient is φ = 245656156.

The previous prime is 245656153. The next prime is 245656193. The reversal of 245656157 is 751656542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185531641 + 60124516 = 13621^2 + 7754^2 .

It is a cyclic number.

It is not a de Polignac number, because 245656157 - 2² = 245656153 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245656153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122828078 + 122828079.

It is an arithmetic number, because the mean of its divisors is an integer number (122828079).

Almost surely, 2^245656157 is an apocalyptic number.

It is an amenable number.

245656157 is a deficient number, since it is larger than the sum of its proper divisors (1).

245656157 is an equidigital number, since it uses as much as digits as its factorization.

245656157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252000, while the sum is 41.

The square root of 245656157 is about 15673.4219939361. The cubic root of 245656157 is about 626.2905871547.

The spelling of 245656157 in words is "two hundred forty-five million, six hundred fifty-six thousand, one hundred fifty-seven".