63557361 has 36 divisors (see below), whose sum is σ = 107557632. Its totient is φ = 36059184.

The previous prime is 63557353. The next prime is 63557363. The reversal of 63557361 is 16375536.

It is a happy number.

It is not a de Polignac number, because 63557361 - 2³ = 63557353 is a prime.

Its product of digits (56700) is a multiple of the sum of its prime factors (1050).

It is not an unprimeable number, because it can be changed into a prime (63557363) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 73216 + ... + 74078.

It is an arithmetic number, because the mean of its divisors is an integer number (2987712).

Almost surely, 2^63557361 is an apocalyptic number.

It is an amenable number.

63557361 is a deficient number, since it is larger than the sum of its proper divisors (44000271).

63557361 is a wasteful number, since it uses less digits than its factorization.

63557361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050 (or 1040 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 63557361 is about 7972.2870620669. The cubic root of 63557361 is about 399.0757012413.

The spelling of 63557361 in words is "sixty-three million, five hundred fifty-seven thousand, three hundred sixty-one".