55309658 has 8 divisors (see below), whose sum is σ = 83699028. Its totient is φ = 27409984.

The previous prime is 55309637. The next prime is 55309669. The reversal of 55309658 is 85690355.

It can be written as a sum of positive squares in 2 ways, for example, as 49801249 + 5508409 = 7057^2 + 2347^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122141 + ... + 122592.

Almost surely, 2^55309658 is an apocalyptic number.

55309658 is a deficient number, since it is larger than the sum of its proper divisors (28389370).

55309658 is a wasteful number, since it uses less digits than its factorization.

55309658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244848.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 55309658 is about 7437.0463222976. The cubic root of 55309658 is about 381.0076166778.

The spelling of 55309658 in words is "fifty-five million, three hundred nine thousand, six hundred fifty-eight".