1251522 has 24 divisors (see below), whose sum is σ = 2830464. Its totient is φ = 398904.

The previous prime is 1251463. The next prime is 1251527. The reversal of 1251522 is 2251521.

It is a hoax number, since the sum of its digits (18) 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 (18).

It is a junction number, because it is equal to n+sod(n) for n = 1251495 and 1251504.

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 11 ways as a sum of consecutive naturals, for example, 1098 + ... + 1925.

It is an arithmetic number, because the mean of its divisors is an integer number (117936).

2^1251522 is an apocalyptic number.

1251522 is an abundant number, since it is smaller than the sum of its proper divisors (1578942).

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

1251522 is a wasteful number, since it uses less digits than its factorization.

1251522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054 (or 3051 counting only the distinct ones).

The product of its digits is 200, while the sum is 18.

The square root of 1251522 is about 1118.7144407757. The cubic root of 1251522 is about 107.7654374301.

Subtracting 1251522 from its reverse (2251521), we obtain a palindrome (999999).

The spelling of 1251522 in words is "one million, two hundred fifty-one thousand, five hundred twenty-two".