245132491 has 2 divisors, whose sum is σ = 245132492. Its totient is φ = 245132490.

The previous prime is 245132429. The next prime is 245132513. The reversal of 245132491 is 194231542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245132491 - 2²³ = 236743883 is a prime.

It is not a weakly prime, because it can be changed into another prime (245132411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122566245 + 122566246.

It is an arithmetic number, because the mean of its divisors is an integer number (122566246).

Almost surely, 2^245132491 is an apocalyptic number.

245132491 is a deficient number, since it is larger than the sum of its proper divisors (1).

245132491 is an equidigital number, since it uses as much as digits as its factorization.

245132491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 245132491 is about 15656.7075402206. The cubic root of 245132491 is about 625.8452486921.

The spelling of 245132491 in words is "two hundred forty-five million, one hundred thirty-two thousand, four hundred ninety-one".