245291407 has 2 divisors, whose sum is σ = 245291408. Its totient is φ = 245291406.

The previous prime is 245291383. The next prime is 245291443. The reversal of 245291407 is 704192542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245291407 - 2⁷ = 245291279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245291447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122645703 + 122645704.

It is an arithmetic number, because the mean of its divisors is an integer number (122645704).

Almost surely, 2^245291407 is an apocalyptic number.

245291407 is a deficient number, since it is larger than the sum of its proper divisors (1).

245291407 is an equidigital number, since it uses as much as digits as its factorization.

245291407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 245291407 is about 15661.7817313357. The cubic root of 245291407 is about 625.9804617473.

The spelling of 245291407 in words is "two hundred forty-five million, two hundred ninety-one thousand, four hundred seven".