201512453 has 16 divisors (see below), whose sum is σ = 216539136. Its totient is φ = 187078320.

The previous prime is 201512429. The next prime is 201512459. The reversal of 201512453 is 354215102.

It is not a de Polignac number, because 201512453 - 2⁸ = 201512197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201512459) 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, 140900 + ... + 142322.

It is an arithmetic number, because the mean of its divisors is an integer number (13533696).

Almost surely, 2^201512453 is an apocalyptic number.

201512453 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

201512453 is a deficient number, since it is larger than the sum of its proper divisors (15026683).

201512453 is a wasteful number, since it uses less digits than its factorization.

201512453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 201512453 is about 14195.5081980181. The cubic root of 201512453 is about 586.2739936807.

Adding to 201512453 its reverse (354215102), we get a palindrome (555727555).

The spelling of 201512453 in words is "two hundred one million, five hundred twelve thousand, four hundred fifty-three".