1553161545 has 72 divisors (see below), whose sum is σ = 2939302080. Its totient is φ = 758309760.

The previous prime is 1553161507. The next prime is 1553161553. The reversal of 1553161545 is 5451613551.

1553161545 is a `hidden beast` number, since 1 + 5 + 5 + 31 + 615 + 4 + 5 = 666.

It is not a de Polignac number, because 1553161545 - 2⁶ = 1553161481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 995476 + ... + 997034.

It is an arithmetic number, because the mean of its divisors is an integer number (40823640).

Almost surely, 2^1553161545 is an apocalyptic number.

1553161545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1553161545 is a deficient number, since it is larger than the sum of its proper divisors (1386140535).

1553161545 is a wasteful number, since it uses less digits than its factorization.

1553161545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727 (or 1711 counting only the distinct ones).

The product of its digits is 45000, while the sum is 36.

The square root of 1553161545 is about 39410.1705781642. The cubic root of 1553161545 is about 1158.0808399272.

The spelling of 1553161545 in words is "one billion, five hundred fifty-three million, one hundred sixty-one thousand, five hundred forty-five".