1553872 has 10 divisors (see below), whose sum is σ = 3010658. Its totient is φ = 776928.

The previous prime is 1553869. The next prime is 1553873. The reversal of 1553872 is 2783551.

It can be written as a sum of positive squares in only one way, i.e., 1498176 + 55696 = 1224^2 + 236^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48543 + ... + 48574.

2^1553872 is an apocalyptic number.

It is an amenable number.

1553872 is a deficient number, since it is larger than the sum of its proper divisors (1456786).

1553872 is an equidigital number, since it uses as much as digits as its factorization.

1553872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97125 (or 97119 counting only the distinct ones).

The product of its digits is 8400, while the sum is 31.

The square root of 1553872 is about 1246.5440224878. The cubic root of 1553872 is about 115.8257391406.

The spelling of 1553872 in words is "one million, five hundred fifty-three thousand, eight hundred seventy-two".