90547001 has 4 divisors (see below), whose sum is σ = 93467904. Its totient is φ = 87626100.

The previous prime is 90546977. The next prime is 90547007. The reversal of 90547001 is 10074509.

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: 10074509 = 773 ⋅13033.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90547001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90547007) 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, 1460405 + ... + 1460466.

It is an arithmetic number, because the mean of its divisors is an integer number (23366976).

Almost surely, 2^90547001 is an apocalyptic number.

It is an amenable number.

90547001 is a deficient number, since it is larger than the sum of its proper divisors (2920903).

90547001 is a wasteful number, since it uses less digits than its factorization.

90547001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920902.

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

The square root of 90547001 is about 9515.6187922804. The cubic root of 90547001 is about 449.0465425635.

The spelling of 90547001 in words is "ninety million, five hundred forty-seven thousand, one".