90401507 has 4 divisors (see below), whose sum is σ = 103316016. Its totient is φ = 77487000.

The previous prime is 90401503. The next prime is 90401513. The reversal of 90401507 is 70510409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70510409 = 83 ⋅849523.

It is a cyclic number.

It is not a de Polignac number, because 90401507 - 2² = 90401503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90401501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6457244 + ... + 6457257.

It is an arithmetic number, because the mean of its divisors is an integer number (25829004).

Almost surely, 2^90401507 is an apocalyptic number.

90401507 is a deficient number, since it is larger than the sum of its proper divisors (12914509).

90401507 is a wasteful number, since it uses less digits than its factorization.

90401507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12914508.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 90401507 is about 9507.9707088316. The cubic root of 90401507 is about 448.8058992084.

The spelling of 90401507 in words is "ninety million, four hundred one thousand, five hundred seven".