561426437 has 16 divisors (see below), whose sum is σ = 661956288. Its totient is φ = 469428480.

The previous prime is 561426431. The next prime is 561426443. The reversal of 561426437 is 734624165.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (561426431) and next prime (561426443).

It is a cyclic number.

It is not a de Polignac number, because 561426437 - 2¹⁶ = 561360901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561426437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561426431) 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, 33533 + ... + 47405.

It is an arithmetic number, because the mean of its divisors is an integer number (41372268).

Almost surely, 2^561426437 is an apocalyptic number.

It is an amenable number.

561426437 is a deficient number, since it is larger than the sum of its proper divisors (100529851).

561426437 is a wasteful number, since it uses less digits than its factorization.

561426437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14180.

The product of its digits is 120960, while the sum is 38.

The square root of 561426437 is about 23694.4389467233. The cubic root of 561426437 is about 824.9563182259.

The spelling of 561426437 in words is "five hundred sixty-one million, four hundred twenty-six thousand, four hundred thirty-seven".