55690026 has 48 divisors (see below), whose sum is σ = 134380224. Its totient is φ = 15069888.

The previous prime is 55689989. The next prime is 55690027. The reversal of 55690026 is 62009655.

It is not an unprimeable number, because it can be changed into a prime (55690027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13326 + ... + 16998.

It is an arithmetic number, because the mean of its divisors is an integer number (2799588).

Almost surely, 2^55690026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55690026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67190112).

55690026 is an abundant number, since it is smaller than the sum of its proper divisors (78690198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55690026 is a wasteful number, since it uses less digits than its factorization.

55690026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723 (or 3704 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 55690026 is about 7462.5750247485. The cubic root of 55690026 is about 381.8790265950.

The spelling of 55690026 in words is "fifty-five million, six hundred ninety thousand, twenty-six".