55236261 has 8 divisors (see below), whose sum is σ = 73746720. Its totient is φ = 36774992.

The previous prime is 55236257. The next prime is 55236263. The reversal of 55236261 is 16263255.

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 55236261 - 2² = 55236257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55236263) 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, 9591 + ... + 14228.

It is an arithmetic number, because the mean of its divisors is an integer number (9218340).

Almost surely, 2^55236261 is an apocalyptic number.

It is an amenable number.

55236261 is a deficient number, since it is larger than the sum of its proper divisors (18510459).

55236261 is a wasteful number, since it uses less digits than its factorization.

55236261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24595.

The product of its digits is 10800, while the sum is 30.

The square root of 55236261 is about 7432.1101310462. The cubic root of 55236261 is about 380.8390072153.

The spelling of 55236261 in words is "fifty-five million, two hundred thirty-six thousand, two hundred sixty-one".