91345401 has 48 divisors (see below), whose sum is σ = 158505984. Its totient is φ = 51488784.

The previous prime is 91345399. The next prime is 91345427. The reversal of 91345401 is 10454319.

91345401 is a `hidden beast` number, since 91 + 34 + 540 + 1 = 666.

It is not a de Polignac number, because 91345401 - 2¹ = 91345399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91345801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140860 + ... + 141506.

It is an arithmetic number, because the mean of its divisors is an integer number (3302208).

Almost surely, 2^91345401 is an apocalyptic number.

It is an amenable number.

91345401 is a deficient number, since it is larger than the sum of its proper divisors (67160583).

91345401 is an equidigital number, since it uses as much as digits as its factorization.

91345401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 91345401 is about 9557.4787993487. The cubic root of 91345401 is about 450.3625078950.

It can be divided in two parts, 9134 and 5401, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 91345401 in words is "ninety-one million, three hundred forty-five thousand, four hundred one".