245242477 has 2 divisors, whose sum is σ = 245242478. Its totient is φ = 245242476.

The previous prime is 245242463. The next prime is 245242489. The reversal of 245242477 is 774242542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223981156 + 21261321 = 14966^2 + 4611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245242477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245242577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122621238 + 122621239.

It is an arithmetic number, because the mean of its divisors is an integer number (122621239).

Almost surely, 2^245242477 is an apocalyptic number.

It is an amenable number.

245242477 is a deficient number, since it is larger than the sum of its proper divisors (1).

245242477 is an equidigital number, since it uses as much as digits as its factorization.

245242477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 125440, while the sum is 37.

The square root of 245242477 is about 15660.2195706191. The cubic root of 245242477 is about 625.9388360728.

The spelling of 245242477 in words is "two hundred forty-five million, two hundred forty-two thousand, four hundred seventy-seven".