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561252624 = 243231274003
BaseRepresentation
bin100001011101000…
…000100100010000
31110010002120212020
4201131000210100
52122140040444
6131405331440
716623366012
oct4135004420
91403076766
10561252624
112688a3449
12137b66b80
138c38025a
145477c1b2
1534417119
hex21740910

561252624 has 80 divisors (see below), whose sum is σ = 1525235712. Its totient is φ = 177496704.

The previous prime is 561252623. The next prime is 561252683. The reversal of 561252624 is 426252165.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (561252623) 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, 138207 + ... + 142209.

Almost surely, 2561252624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561252624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762617856).

561252624 is an abundant number, since it is smaller than the sum of its proper divisors (963983088).

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

561252624 is a wasteful number, since it uses less digits than its factorization.

561252624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4164 (or 4158 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 561252624 is about 23690.7708612447. The cubic root of 561252624 is about 824.8711762121.

The spelling of 561252624 in words is "five hundred sixty-one million, two hundred fifty-two thousand, six hundred twenty-four".