15278953 has 2 divisors, whose sum is σ = 15278954. Its totient is φ = 15278952.

The previous prime is 15278951. The next prime is 15278957. The reversal of 15278953 is 35987251.

15278953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15116544 + 162409 = 3888^2 + 403^2 .

It is an emirp because it is prime and its reverse (35987251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15278953 - 2¹ = 15278951 is a prime.

Together with 15278951, it forms a pair of twin primes.

It is equal to p₉₈₇₅₈₃ and since 15278953 and 987583 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (15278951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7639476 + 7639477.

It is an arithmetic number, because the mean of its divisors is an integer number (7639477).

Almost surely, 2^15278953 is an apocalyptic number.

It is an amenable number.

15278953 is a deficient number, since it is larger than the sum of its proper divisors (1).

15278953 is an equidigital number, since it uses as much as digits as its factorization.

15278953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 40.

The square root of 15278953 is about 3908.8301318937. The cubic root of 15278953 is about 248.1406211257.

The spelling of 15278953 in words is "fifteen million, two hundred seventy-eight thousand, nine hundred fifty-three".