20151452 has 6 divisors (see below), whose sum is σ = 35265048. Its totient is φ = 10075724.

The previous prime is 20151449. The next prime is 20151463. The reversal of 20151452 is 25415102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2518928 + ... + 2518935.

It is an arithmetic number, because the mean of its divisors is an integer number (5877508).

Almost surely, 2^20151452 is an apocalyptic number.

It is an amenable number.

20151452 is a deficient number, since it is larger than the sum of its proper divisors (15113596).

20151452 is a wasteful number, since it uses less digits than its factorization.

20151452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037867 (or 5037865 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 20151452 is about 4489.0368677479. The cubic root of 20151452 is about 272.1252126794.

Adding to 20151452 its reverse (25415102), we get a palindrome (45566554).

The spelling of 20151452 in words is "twenty million, one hundred fifty-one thousand, four hundred fifty-two".