15191055 has 24 divisors (see below), whose sum is σ = 28725840. Its totient is φ = 7365120.

The previous prime is 15191027. The next prime is 15191069. The reversal of 15191055 is 55019151.

It is not a de Polignac number, because 15191055 - 2⁷ = 15190927 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14850 + ... + 15839.

It is an arithmetic number, because the mean of its divisors is an integer number (1196910).

Almost surely, 2^15191055 is an apocalyptic number.

15191055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15191055 is a deficient number, since it is larger than the sum of its proper divisors (13534785).

15191055 is a wasteful number, since it uses less digits than its factorization.

15191055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30711 (or 30708 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 27.

The square root of 15191055 is about 3897.5703970551. The cubic root of 15191055 is about 247.6638645488.

The spelling of 15191055 in words is "fifteen million, one hundred ninety-one thousand, fifty-five".