91542906 has 96 divisors (see below), whose sum is σ = 251925120. Its totient is φ = 24126336.

The previous prime is 91542901. The next prime is 91542911. The reversal of 91542906 is 60924519.

It is an interprime number because it is at equal distance from previous prime (91542901) and next prime (91542911).

It is not an unprimeable number, because it can be changed into a prime (91542901) 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, 63166 + ... + 64598.

It is an arithmetic number, because the mean of its divisors is an integer number (2624220).

Almost surely, 2^91542906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91542906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125962560).

91542906 is an abundant number, since it is smaller than the sum of its proper divisors (160382214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91542906 is a wasteful number, since it uses less digits than its factorization.

91542906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477 (or 1458 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 91542906 is about 9567.8057045490. The cubic root of 91542906 is about 450.6868621785.

The spelling of 91542906 in words is "ninety-one million, five hundred forty-two thousand, nine hundred six".