1251528 has 16 divisors (see below), whose sum is σ = 3128880. Its totient is φ = 417168.

The previous prime is 1251527. The next prime is 1251529. The reversal of 1251528 is 8251521.

It is an interprime number because it is at equal distance from previous prime (1251527) and next prime (1251529).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 52147 = 1251528 / (1 + 2 + 5 + 1 + 5 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 1251498 and 1251507.

It is not an unprimeable number, because it can be changed into a prime (1251527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26050 + ... + 26097.

It is an arithmetic number, because the mean of its divisors is an integer number (195555).

2^1251528 is an apocalyptic number.

It is an amenable number.

1251528 is an abundant number, since it is smaller than the sum of its proper divisors (1877352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1251528 is a wasteful number, since it uses less digits than its factorization.

1251528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52156 (or 52152 counting only the distinct ones).

The product of its digits is 800, while the sum is 24.

The square root of 1251528 is about 1118.7171224219. The cubic root of 1251528 is about 107.7656096449.

It can be divided in two parts, 125 and 1528, that added together give a triangular number (1653 = T₅₇).

The spelling of 1251528 in words is "one million, two hundred fifty-one thousand, five hundred twenty-eight".