55472247 has 6 divisors (see below), whose sum is σ = 80126592. Its totient is φ = 36981492.

The previous prime is 55472243. The next prime is 55472257. The reversal of 55472247 is 74227455.

It is a happy number.

It is not a de Polignac number, because 55472247 - 2² = 55472243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55472243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3081783 + ... + 3081800.

It is an arithmetic number, because the mean of its divisors is an integer number (13354432).

Almost surely, 2^55472247 is an apocalyptic number.

55472247 is a deficient number, since it is larger than the sum of its proper divisors (24654345).

55472247 is a wasteful number, since it uses less digits than its factorization.

55472247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6163589 (or 6163586 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 55472247 is about 7447.9693205598. The cubic root of 55472247 is about 381.3805897887.

The spelling of 55472247 in words is "fifty-five million, four hundred seventy-two thousand, two hundred forty-seven".