15214993 has 2 divisors, whose sum is σ = 15214994. Its totient is φ = 15214992.

The previous prime is 15214987. The next prime is 15215003. The reversal of 15214993 is 39941251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12229009 + 2985984 = 3497^2 + 1728^2 .

It is a cyclic number.

It is not a de Polignac number, because 15214993 - 2¹⁷ = 15083921 is a prime.

It is not a weakly prime, because it can be changed into another prime (15214933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7607496 + 7607497.

It is an arithmetic number, because the mean of its divisors is an integer number (7607497).

Almost surely, 2^15214993 is an apocalyptic number.

It is an amenable number.

15214993 is a deficient number, since it is larger than the sum of its proper divisors (1).

15214993 is an equidigital number, since it uses as much as digits as its factorization.

15214993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 34.

The square root of 15214993 is about 3900.6400756799. The cubic root of 15214993 is about 247.7938854994.

The spelling of 15214993 in words is "fifteen million, two hundred fourteen thousand, nine hundred ninety-three".