15720453 has 16 divisors (see below), whose sum is σ = 26616960. Its totient is φ = 8983008.

The previous prime is 15720451. The next prime is 15720457. The reversal of 15720453 is 35402751.

It is a happy number.

15720453 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 15720453 - 2¹ = 15720451 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15720451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41400 + ... + 41777.

It is an arithmetic number, because the mean of its divisors is an integer number (1663560).

Almost surely, 2^15720453 is an apocalyptic number.

It is an amenable number.

15720453 is a deficient number, since it is larger than the sum of its proper divisors (10896507).

15720453 is an equidigital number, since it uses as much as digits as its factorization.

15720453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83193 (or 83187 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 15720453 is about 3964.9026469763. The cubic root of 15720453 is about 250.5080495101.

The spelling of 15720453 in words is "fifteen million, seven hundred twenty thousand, four hundred fifty-three".