561162654 has 160 divisors (see below), whose sum is σ = 1422390816. Its totient is φ = 164229120.

The previous prime is 561162653. The next prime is 561162689. The reversal of 561162654 is 456261165.

561162654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561162653) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5785134 + ... + 5785230.

Almost surely, 2^561162654 is an apocalyptic number.

561162654 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 561162654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (711195408).

561162654 is an abundant number, since it is smaller than the sum of its proper divisors (861228162).

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

561162654 is a wasteful number, since it uses less digits than its factorization.

561162654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 223 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 561162654 is about 23688.8719444384. The cubic root of 561162654 is about 824.8270976502.

It can be divided in two parts, 5611 and 62654, that added together give a triangular number (68265 = T₃₆₉).

The spelling of 561162654 in words is "five hundred sixty-one million, one hundred sixty-two thousand, six hundred fifty-four".