91542160 has 20 divisors (see below), whose sum is σ = 212835708. Its totient is φ = 36616832.

The previous prime is 91542131. The next prime is 91542193. The reversal of 91542160 is 6124519.

It can be written as a sum of positive squares in 2 ways, for example, as 66781584 + 24760576 = 8172^2 + 4976^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572059 + ... + 572218.

Almost surely, 2^91542160 is an apocalyptic number.

It is an amenable number.

91542160 is an abundant number, since it is smaller than the sum of its proper divisors (121293548).

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

91542160 is a wasteful number, since it uses less digits than its factorization.

91542160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144290 (or 1144284 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 91542160 is about 9567.7667195642. The cubic root of 91542160 is about 450.6856379317.

Adding to 91542160 its reverse (6124519), we get a palindrome (97666679).

The spelling of 91542160 in words is "ninety-one million, five hundred forty-two thousand, one hundred sixty".