55669742 has 4 divisors (see below), whose sum is σ = 83504616. Its totient is φ = 27834870.

The previous prime is 55669741. The next prime is 55669787. The reversal of 55669742 is 24796655.

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

It is a junction number, because it is equal to n+sod(n) for n = 55669693 and 55669702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55669741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13917434 + ... + 13917437.

It is an arithmetic number, because the mean of its divisors is an integer number (20876154).

Almost surely, 2^55669742 is an apocalyptic number.

55669742 is a deficient number, since it is larger than the sum of its proper divisors (27834874).

55669742 is a wasteful number, since it uses less digits than its factorization.

55669742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27834873.

The product of its digits is 453600, while the sum is 44.

The square root of 55669742 is about 7461.2158526610. The cubic root of 55669742 is about 381.8326569823.

The spelling of 55669742 in words is "fifty-five million, six hundred sixty-nine thousand, seven hundred forty-two".