15140497 has 4 divisors (see below), whose sum is σ = 15149296. Its totient is φ = 15131700.

The previous prime is 15140483. The next prime is 15140507. The reversal of 15140497 is 79404151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 79404151 = 1097 ⋅72383.

It is a cyclic number.

It is not a de Polignac number, because 15140497 - 2²³ = 6751889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15140597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879 + ... + 5572.

It is an arithmetic number, because the mean of its divisors is an integer number (3787324).

Almost surely, 2^15140497 is an apocalyptic number.

It is an amenable number.

15140497 is a deficient number, since it is larger than the sum of its proper divisors (8799).

15140497 is an equidigital number, since it uses as much as digits as its factorization.

15140497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8798.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 15140497 is about 3891.0791562239. The cubic root of 15140497 is about 247.3888056101.

The spelling of 15140497 in words is "fifteen million, one hundred forty thousand, four hundred ninety-seven".