91552155 has 16 divisors (see below), whose sum is σ = 148886304. Its totient is φ = 48026880.

The previous prime is 91552151. The next prime is 91552169. The reversal of 91552155 is 55125519.

It is not a de Polignac number, because 91552155 - 2² = 91552151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91552151) 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 15 ways as a sum of consecutive naturals, for example, 49114 + ... + 50943.

It is an arithmetic number, because the mean of its divisors is an integer number (9305394).

Almost surely, 2^91552155 is an apocalyptic number.

91552155 is a deficient number, since it is larger than the sum of its proper divisors (57334149).

91552155 is a wasteful number, since it uses less digits than its factorization.

91552155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100126.

The product of its digits is 11250, while the sum is 33.

The square root of 91552155 is about 9568.2890320057. The cubic root of 91552155 is about 450.7020399881.

The spelling of 91552155 in words is "ninety-one million, five hundred fifty-two thousand, one hundred fifty-five".