55053247 has 2 divisors, whose sum is σ = 55053248. Its totient is φ = 55053246.

The previous prime is 55053233. The next prime is 55053253. The reversal of 55053247 is 74235055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55053247 - 2¹⁵ = 55020479 is a prime.

It is a super-4 number, since 4×55053247⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55053217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27526623 + 27526624.

It is an arithmetic number, because the mean of its divisors is an integer number (27526624).

Almost surely, 2^55053247 is an apocalyptic number.

55053247 is a deficient number, since it is larger than the sum of its proper divisors (1).

55053247 is an equidigital number, since it uses as much as digits as its factorization.

55053247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 55053247 is about 7419.7875306507. The cubic root of 55053247 is about 380.4179312262.

The spelling of 55053247 in words is "fifty-five million, fifty-three thousand, two hundred forty-seven".