55147742 has 24 divisors (see below), whose sum is σ = 90202896. Its totient is φ = 25274496.

The previous prime is 55147733. The next prime is 55147753. The reversal of 55147742 is 24774155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55958 + ... + 56934.

It is an arithmetic number, because the mean of its divisors is an integer number (3758454).

Almost surely, 2^55147742 is an apocalyptic number.

55147742 is a deficient number, since it is larger than the sum of its proper divisors (35055154).

55147742 is a wasteful number, since it uses less digits than its factorization.

55147742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1159 counting only the distinct ones).

The product of its digits is 39200, while the sum is 35.

The square root of 55147742 is about 7426.1525704769. The cubic root of 55147742 is about 380.6354602960.

The spelling of 55147742 in words is "fifty-five million, one hundred forty-seven thousand, seven hundred forty-two".