90320453 has 4 divisors (see below), whose sum is σ = 93234048. Its totient is φ = 87406860.

The previous prime is 90320437. The next prime is 90320459. The reversal of 90320453 is 35402309.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35402309 = 3037 ⋅11657.

It is a cyclic number.

It is not a de Polignac number, because 90320453 - 2⁴ = 90320437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90320459) 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, 1456751 + ... + 1456812.

It is an arithmetic number, because the mean of its divisors is an integer number (23308512).

Almost surely, 2^90320453 is an apocalyptic number.

It is an amenable number.

90320453 is a deficient number, since it is larger than the sum of its proper divisors (2913595).

90320453 is a wasteful number, since it uses less digits than its factorization.

90320453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913594.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 90320453 is about 9503.7073292479. The cubic root of 90320453 is about 448.6717259628.

The spelling of 90320453 in words is "ninety million, three hundred twenty thousand, four hundred fifty-three".