90273751 has 4 divisors (see below), whose sum is σ = 90297504. Its totient is φ = 90250000.

The previous prime is 90273739. The next prime is 90273773. The reversal of 90273751 is 15737209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15737209 = 157 ⋅100237.

It is a 4-Lehmer number, since φ(90273751) divides (90273751-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 90273751 - 2²³ = 81885143 is a prime.

It is a super-2 number, since 2×90273751² = 16298700239220002, which contains 22 as substring.

It is a deceptive number, since it divides R_90273750.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90273851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4750 + ... + 14251.

It is an arithmetic number, because the mean of its divisors is an integer number (22574376).

Almost surely, 2^90273751 is an apocalyptic number.

90273751 is the 4751-st decagonal number.

90273751 is a deficient number, since it is larger than the sum of its proper divisors (23753).

90273751 is a wasteful number, since it uses less digits than its factorization.

90273751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23752.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 90273751 is about 9501.2499703986. The cubic root of 90273751 is about 448.5943810617.

The spelling of 90273751 in words is "ninety million, two hundred seventy-three thousand, seven hundred fifty-one".