85490507 has 2 divisors, whose sum is σ = 85490508. Its totient is φ = 85490506.

The previous prime is 85490477. The next prime is 85490567. The reversal of 85490507 is 70509458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85490507 - 2²² = 81296203 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (85490567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42745253 + 42745254.

It is an arithmetic number, because the mean of its divisors is an integer number (42745254).

Almost surely, 2^85490507 is an apocalyptic number.

85490507 is a deficient number, since it is larger than the sum of its proper divisors (1).

85490507 is an equidigital number, since it uses as much as digits as its factorization.

85490507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 85490507 is about 9246.1076675540. The cubic root of 85490507 is about 440.5271007422.

The spelling of 85490507 in words is "eighty-five million, four hundred ninety thousand, five hundred seven".