1553996 has 6 divisors (see below), whose sum is σ = 2719500. Its totient is φ = 776996.

The previous prime is 1553983. The next prime is 1554019. The reversal of 1553996 is 6993551.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194246 + ... + 194253.

It is an arithmetic number, because the mean of its divisors is an integer number (453250).

2^1553996 is an apocalyptic number.

It is an amenable number.

1553996 is a deficient number, since it is larger than the sum of its proper divisors (1165504).

1553996 is a wasteful number, since it uses less digits than its factorization.

1553996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388503 (or 388501 counting only the distinct ones).

The product of its digits is 36450, while the sum is 38.

The square root of 1553996 is about 1246.5937590089. The cubic root of 1553996 is about 115.8288200485.

The spelling of 1553996 in words is "one million, five hundred fifty-three thousand, nine hundred ninety-six".