55147743 has 32 divisors (see below), whose sum is σ = 93726720. Its totient is φ = 31393440.

The previous prime is 55147733. The next prime is 55147753. The reversal of 55147743 is 34774155.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55147733) and next prime (55147753).

It is not a de Polignac number, because 55147743 - 2⁶ = 55147679 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55147698 and 55147707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55147733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81121 + ... + 81797.

It is an arithmetic number, because the mean of its divisors is an integer number (2928960).

Almost surely, 2^55147743 is an apocalyptic number.

55147743 is a deficient number, since it is larger than the sum of its proper divisors (38578977).

55147743 is a wasteful number, since it uses less digits than its factorization.

55147743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124 (or 1118 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 55147743 is about 7426.1526378065. The cubic root of 55147743 is about 380.6354625967.

The spelling of 55147743 in words is "fifty-five million, one hundred forty-seven thousand, seven hundred forty-three".