55694790 has 80 divisors (see below), whose sum is σ = 154986480. Its totient is φ = 14333760.

The previous prime is 55694789. The next prime is 55694801. The reversal of 55694790 is 9749655.

It is a happy number.

55694790 is a `hidden beast` number, since 556 + 9 + 4 + 7 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22305 + ... + 24675.

It is an arithmetic number, because the mean of its divisors is an integer number (1937331).

Almost surely, 2^55694790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55694790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77493240).

55694790 is an abundant number, since it is smaller than the sum of its proper divisors (99291690).

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

55694790 is a wasteful number, since it uses less digits than its factorization.

55694790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419 (or 2410 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 55694790 is about 7462.8942106933. The cubic root of 55694790 is about 381.8899155575.

The spelling of 55694790 in words is "fifty-five million, six hundred ninety-four thousand, seven hundred ninety".