402561453 has 16 divisors (see below), whose sum is σ = 613707776. Its totient is φ = 229929840.

The previous prime is 402561451. The next prime is 402561469. The reversal of 402561453 is 354165204.

It is not a de Polignac number, because 402561453 - 2¹ = 402561451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402561453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402561451) 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, 84000 + ... + 88662.

It is an arithmetic number, because the mean of its divisors is an integer number (38356736).

Almost surely, 2^402561453 is an apocalyptic number.

It is an amenable number.

402561453 is a deficient number, since it is larger than the sum of its proper divisors (211146323).

402561453 is a wasteful number, since it uses less digits than its factorization.

402561453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8784.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 402561453 is about 20063.9341356574. The cubic root of 402561453 is about 738.3757001146.

The spelling of 402561453 in words is "four hundred two million, five hundred sixty-one thousand, four hundred fifty-three".