1553877216 has 48 divisors (see below), whose sum is σ = 4532144400. Its totient is φ = 517958784.

The previous prime is 1553877211. The next prime is 1553877229. The reversal of 1553877216 is 6127783551.

It is a happy number.

1553877216 is a `hidden beast` number, since 1 + 55 + 387 + 7 + 216 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553877211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 898371 + ... + 900098.

It is an arithmetic number, because the mean of its divisors is an integer number (94419675).

Almost surely, 2^1553877216 is an apocalyptic number.

1553877216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1553877216 is an abundant number, since it is smaller than the sum of its proper divisors (2978267184).

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

1553877216 is a wasteful number, since it uses less digits than its factorization.

1553877216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798488 (or 1798474 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 1553877216 is about 39419.2493079206. The cubic root of 1553877216 is about 1158.2586874083.

The spelling of 1553877216 in words is "one billion, five hundred fifty-three million, eight hundred seventy-seven thousand, two hundred sixteen".