90075516251 has 8 divisors (see below), whose sum is σ = 105454263264. Its totient is φ = 75324473280.

The previous prime is 90075516199. The next prime is 90075516257. The reversal of 90075516251 is 15261557009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90075516251 - 2⁶ = 90075516187 is a prime.

It is a super-2 number, since 2×90075516251² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 90075516199 and 90075516208.

It is not an unprimeable number, because it can be changed into a prime (90075516257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156925700 + ... + 156926273.

It is an arithmetic number, because the mean of its divisors is an integer number (13181782908).

Almost surely, 2^90075516251 is an apocalyptic number.

90075516251 is a deficient number, since it is larger than the sum of its proper divisors (15378747013).

90075516251 is a wasteful number, since it uses less digits than its factorization.

90075516251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313852021.

The product of its (nonzero) digits is 94500, while the sum is 41.

The spelling of 90075516251 in words is "ninety billion, seventy-five million, five hundred sixteen thousand, two hundred fifty-one".