1531612 has 12 divisors (see below), whose sum is σ = 2718576. Its totient is φ = 754880.

The previous prime is 1531591. The next prime is 1531619. The reversal of 1531612 is 2161351.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1531612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531619) 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, 2413 + ... + 2980.

It is an arithmetic number, because the mean of its divisors is an integer number (226548).

2^1531612 is an apocalyptic number.

It is an amenable number.

1531612 is a deficient number, since it is larger than the sum of its proper divisors (1186964).

1531612 is a wasteful number, since it uses less digits than its factorization.

1531612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468 (or 5466 counting only the distinct ones).

The product of its digits is 180, while the sum is 19.

The square root of 1531612 is about 1237.5831285211. The cubic root of 1531612 is about 115.2699894589.

Adding to 1531612 its reverse (2161351), we get a palindrome (3692963).

The spelling of 1531612 in words is "one million, five hundred thirty-one thousand, six hundred twelve".