55473247 has 4 divisors (see below), whose sum is σ = 56175520. Its totient is φ = 54770976.

The previous prime is 55473241. The next prime is 55473251. The reversal of 55473247 is 74237455.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 55473247 - 2³ = 55473239 is a prime.

It is a super-2 number, since 2×55473247² = 6154562265446018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55473241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351018 + ... + 351175.

It is an arithmetic number, because the mean of its divisors is an integer number (14043880).

Almost surely, 2^55473247 is an apocalyptic number.

55473247 is a deficient number, since it is larger than the sum of its proper divisors (702273).

55473247 is an equidigital number, since it uses as much as digits as its factorization.

55473247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702272.

The product of its digits is 117600, while the sum is 37.

The square root of 55473247 is about 7448.0364526498. The cubic root of 55473247 is about 381.3828814950.

The spelling of 55473247 in words is "fifty-five million, four hundred seventy-three thousand, two hundred forty-seven".