55535687 has 4 divisors (see below), whose sum is σ = 55842696. Its totient is φ = 55228680.

The previous prime is 55535677. The next prime is 55535729. The reversal of 55535687 is 78653555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55535687 - 2⁴ = 55535671 is a prime.

It is a super-3 number, since 3×55535687³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55535677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153233 + ... + 153594.

It is an arithmetic number, because the mean of its divisors is an integer number (13960674).

Almost surely, 2^55535687 is an apocalyptic number.

55535687 is a deficient number, since it is larger than the sum of its proper divisors (307009).

55535687 is a wasteful number, since it uses less digits than its factorization.

55535687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307008.

The product of its digits is 630000, while the sum is 44.

The square root of 55535687 is about 7452.2269825872. The cubic root of 55535687 is about 381.5259211237.

The spelling of 55535687 in words is "fifty-five million, five hundred thirty-five thousand, six hundred eighty-seven".