1561372 has 6 divisors (see below), whose sum is σ = 2732408. Its totient is φ = 780684.

The previous prime is 1561367. The next prime is 1561393. The reversal of 1561372 is 2731651.

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, 195168 + ... + 195175.

2^1561372 is an apocalyptic number.

It is an amenable number.

1561372 is a deficient number, since it is larger than the sum of its proper divisors (1171036).

1561372 is a wasteful number, since it uses less digits than its factorization.

1561372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390347 (or 390345 counting only the distinct ones).

The product of its digits is 1260, while the sum is 25.

The square root of 1561372 is about 1249.5487185380. The cubic root of 1561372 is about 116.0117903196.

The spelling of 1561372 in words is "one million, five hundred sixty-one thousand, three hundred seventy-two".