56019261 has 8 divisors (see below), whose sum is σ = 75958560. Its totient is φ = 36713072.

The previous prime is 56019259. The next prime is 56019269. The reversal of 56019261 is 16291065.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56019261 - 2¹ = 56019259 is a prime.

It is a super-2 number, since 2×56019261² = 6276315205972242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56019269) 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, 158070 + ... + 158423.

It is an arithmetic number, because the mean of its divisors is an integer number (9494820).

Almost surely, 2^56019261 is an apocalyptic number.

It is an amenable number.

56019261 is a deficient number, since it is larger than the sum of its proper divisors (19939299).

56019261 is a wasteful number, since it uses less digits than its factorization.

56019261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316555.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 56019261 is about 7484.6015926033. The cubic root of 56019261 is about 382.6300945832.

It can be divided in two parts, 56019 and 261, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 56019261 in words is "fifty-six million, nineteen thousand, two hundred sixty-one".