55235687 has 8 divisors (see below), whose sum is σ = 59557680. Its totient is φ = 50924160.

The previous prime is 55235639. The next prime is 55235689. The reversal of 55235687 is 78653255.

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 55235687 - 2¹⁴ = 55219303 is a prime.

It is a super-2 number, since 2×55235687² = 6101962236723938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55235689) 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, 11012 + ... + 15222.

It is an arithmetic number, because the mean of its divisors is an integer number (7444710).

Almost surely, 2^55235687 is an apocalyptic number.

55235687 is a deficient number, since it is larger than the sum of its proper divisors (4321993).

55235687 is a wasteful number, since it uses less digits than its factorization.

55235687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233.

The product of its digits is 252000, while the sum is 41.

The square root of 55235687 is about 7432.0715147259. The cubic root of 55235687 is about 380.8376880194.

The spelling of 55235687 in words is "fifty-five million, two hundred thirty-five thousand, six hundred eighty-seven".