53420747249 has 4 divisors (see below), whose sum is σ = 56563144164. Its totient is φ = 50278350336.

The previous prime is 53420747239. The next prime is 53420747273. The reversal of 53420747249 is 94274702435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94274702435 = 5 ⋅18854940487.

It can be written as a sum of positive squares in 2 ways, for example, as 18860078224 + 34560669025 = 137332^2 + 185905^2 .

It is a cyclic number.

It is not a de Polignac number, because 53420747249 - 2²⁴ = 53403970033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53420747239) 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, 1571198432 + ... + 1571198465.

It is an arithmetic number, because the mean of its divisors is an integer number (14140786041).

Almost surely, 2^53420747249 is an apocalyptic number.

It is an amenable number.

53420747249 is a deficient number, since it is larger than the sum of its proper divisors (3142396915).

53420747249 is a wasteful number, since it uses less digits than its factorization.

53420747249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142396914.

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 53420747249 in words is "fifty-three billion, four hundred twenty million, seven hundred forty-seven thousand, two hundred forty-nine".