1553552416 has 24 divisors (see below), whose sum is σ = 3293830764. Its totient is φ = 717024000.

The previous prime is 1553552401. The next prime is 1553552447. The reversal of 1553552416 is 6142553551.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1252876816 + 300675600 = 35396^2 + 17340^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1866835 + ... + 1867666.

Almost surely, 2^1553552416 is an apocalyptic number.

1553552416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1553552416 is an abundant number, since it is smaller than the sum of its proper divisors (1740278348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1553552416 is a wasteful number, since it uses less digits than its factorization.

1553552416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3734524 (or 3734516 counting only the distinct ones).

The product of its digits is 90000, while the sum is 37.

The square root of 1553552416 is about 39415.1292779816. The cubic root of 1553552416 is about 1158.1779799082.

The spelling of 1553552416 in words is "one billion, five hundred fifty-three million, five hundred fifty-two thousand, four hundred sixteen".