55553782 has 4 divisors (see below), whose sum is σ = 83330676. Its totient is φ = 27776890.

The previous prime is 55553779. The next prime is 55553783. The reversal of 55553782 is 28735555.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28735555 = 5 ⋅5747111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55553783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13888444 + ... + 13888447.

It is an arithmetic number, because the mean of its divisors is an integer number (20832669).

Almost surely, 2^55553782 is an apocalyptic number.

55553782 is a deficient number, since it is larger than the sum of its proper divisors (27776894).

55553782 is a wasteful number, since it uses less digits than its factorization.

55553782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27776893.

The product of its digits is 210000, while the sum is 40.

The square root of 55553782 is about 7453.4409503262. The cubic root of 55553782 is about 381.5673537126.

The spelling of 55553782 in words is "fifty-five million, five hundred fifty-three thousand, seven hundred eighty-two".