15077997 has 48 divisors (see below), whose sum is σ = 26058240. Its totient is φ = 8323200.

The previous prime is 15077977. The next prime is 15078013. The reversal of 15077997 is 79977051.

15077997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15077997 - 2¹⁰ = 15076973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15077947) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 486372 + ... + 486402.

It is an arithmetic number, because the mean of its divisors is an integer number (542880).

Almost surely, 2^15077997 is an apocalyptic number.

15077997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

15077997 is a deficient number, since it is larger than the sum of its proper divisors (10980243).

15077997 is a wasteful number, since it uses less digits than its factorization.

15077997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 138915, while the sum is 45.

The square root of 15077997 is about 3883.0396598541. The cubic root of 15077997 is about 247.0479289814.

The spelling of 15077997 in words is "fifteen million, seventy-seven thousand, nine hundred ninety-seven".