245316451 has 2 divisors, whose sum is σ = 245316452. Its totient is φ = 245316450.

The previous prime is 245316373. The next prime is 245316493. The reversal of 245316451 is 154613542.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245316451 - 2¹⁷ = 245185379 is a prime.

It is a super-2 number, since 2×245316451² = 120360322262470802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245316151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122658225 + 122658226.

It is an arithmetic number, because the mean of its divisors is an integer number (122658226).

Almost surely, 2^245316451 is an apocalyptic number.

245316451 is a deficient number, since it is larger than the sum of its proper divisors (1).

245316451 is an equidigital number, since it uses as much as digits as its factorization.

245316451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 31.

The square root of 245316451 is about 15662.5812368204. The cubic root of 245316451 is about 626.0017650091.

Adding to 245316451 its reverse (154613542), we get a palindrome (399929993).

The spelling of 245316451 in words is "two hundred forty-five million, three hundred sixteen thousand, four hundred fifty-one".