507440491 has 2 divisors, whose sum is σ = 507440492. Its totient is φ = 507440490.

The previous prime is 507440471. The next prime is 507440501. The reversal of 507440491 is 194044705.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 507440491 - 2⁷ = 507440363 is a prime.

It is not a weakly prime, because it can be changed into another prime (507440411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253720245 + 253720246.

It is an arithmetic number, because the mean of its divisors is an integer number (253720246).

Almost surely, 2^507440491 is an apocalyptic number.

507440491 is a deficient number, since it is larger than the sum of its proper divisors (1).

507440491 is an equidigital number, since it uses as much as digits as its factorization.

507440491 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 507440491 is about 22526.4398207972. The cubic root of 507440491 is about 797.6181713824.

The spelling of 507440491 in words is "five hundred seven million, four hundred forty thousand, four hundred ninety-one".