1553054997 has 16 divisors (see below), whose sum is σ = 2237655168. Its totient is φ = 952457280.

The previous prime is 1553054969. The next prime is 1553055001. The reversal of 1553054997 is 7994503551.

It is not a de Polignac number, because 1553054997 - 2¹² = 1553050901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553054947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56529 + ... + 79382.

It is an arithmetic number, because the mean of its divisors is an integer number (139853448).

Almost surely, 2^1553054997 is an apocalyptic number.

It is an amenable number.

1553054997 is a deficient number, since it is larger than the sum of its proper divisors (684600171).

1553054997 is a wasteful number, since it uses less digits than its factorization.

1553054997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136220.

The product of its (nonzero) digits is 850500, while the sum is 48.

The square root of 1553054997 is about 39408.8187719449. The cubic root of 1553054997 is about 1158.0543575952.

The spelling of 1553054997 in words is "one billion, five hundred fifty-three million, fifty-four thousand, nine hundred ninety-seven".