245133997 has 2 divisors, whose sum is σ = 245133998. Its totient is φ = 245133996.

The previous prime is 245133989. The next prime is 245134027. The reversal of 245133997 is 799331542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241678116 + 3455881 = 15546^2 + 1859^2 .

It is a cyclic number.

It is not a de Polignac number, because 245133997 - 2³ = 245133989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245133937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122566998 + 122566999.

It is an arithmetic number, because the mean of its divisors is an integer number (122566999).

Almost surely, 2^245133997 is an apocalyptic number.

It is an amenable number.

245133997 is a deficient number, since it is larger than the sum of its proper divisors (1).

245133997 is an equidigital number, since it uses as much as digits as its factorization.

245133997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 43.

The square root of 245133997 is about 15656.7556345496. The cubic root of 245133997 is about 625.8465303406.

The spelling of 245133997 in words is "two hundred forty-five million, one hundred thirty-three thousand, nine hundred ninety-seven".