91873051 has 8 divisors (see below), whose sum is σ = 92801808. Its totient is φ = 90948000.

The previous prime is 91873043. The next prime is 91873097. The reversal of 91873051 is 15037819.

91873051 = T₁₆₁ + T₁₆₂ + ... + T₈₂₁.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 91873051 - 2³ = 91873043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91872998 and 91873016.

It is not an unprimeable number, because it can be changed into a prime (91873021) 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, 86061 + ... + 87121.

It is an arithmetic number, because the mean of its divisors is an integer number (11600226).

Almost surely, 2^91873051 is an apocalyptic number.

91873051 is a deficient number, since it is larger than the sum of its proper divisors (928757).

91873051 is a wasteful number, since it uses less digits than its factorization.

91873051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 91873051 is about 9585.0430880617. The cubic root of 91873051 is about 451.2280055168.

The spelling of 91873051 in words is "ninety-one million, eight hundred seventy-three thousand, fifty-one".