14991975 has 36 divisors (see below), whose sum is σ = 28029456. Its totient is φ = 7645440.

The previous prime is 14991973. The next prime is 14991997. The reversal of 14991975 is 57919941.

14991975 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 14991975 - 2¹ = 14991973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 14991975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14991973) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3727 + ... + 6623.

It is an arithmetic number, because the mean of its divisors is an integer number (778596).

Almost surely, 2^14991975 is an apocalyptic number.

14991975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

14991975 is the 2070-th nonagonal number.

14991975 is a deficient number, since it is larger than the sum of its proper divisors (13037481).

14991975 is a wasteful number, since it uses less digits than its factorization.

14991975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936 (or 2928 counting only the distinct ones).

The product of its digits is 102060, while the sum is 45.

The square root of 14991975 is about 3871.9471845571. The cubic root of 14991975 is about 246.5772188055.

The spelling of 14991975 in words is "fourteen million, nine hundred ninety-one thousand, nine hundred seventy-five".