55260247 has 4 divisors (see below), whose sum is σ = 63154576. Its totient is φ = 47365920.

The previous prime is 55260239. The next prime is 55260253. The reversal of 55260247 is 74206255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74206255 = 5 ⋅14841251.

It is not a de Polignac number, because 55260247 - 2³ = 55260239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55260287) 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, 3947154 + ... + 3947167.

It is an arithmetic number, because the mean of its divisors is an integer number (15788644).

Almost surely, 2^55260247 is an apocalyptic number.

55260247 is a deficient number, since it is larger than the sum of its proper divisors (7894329).

55260247 is an equidigital number, since it uses as much as digits as its factorization.

55260247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7894328.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 55260247 is about 7433.7236295143. The cubic root of 55260247 is about 380.8941248882.

The spelling of 55260247 in words is "fifty-five million, two hundred sixty thousand, two hundred forty-seven".