53047566 has 96 divisors (see below), whose sum is σ = 138928608. Its totient is φ = 14411520.

The previous prime is 53047559. The next prime is 53047573. The reversal of 53047566 is 66574035.

53047566 = T₄₄₃ + T₄₄₄ + ... + T₇₃₉.

53047566 is a `hidden beast` number, since 53 + 0 + 47 + 566 = 666.

It is an interprime number because it is at equal distance from previous prime (53047559) and next prime (53047573).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53047566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94960 + ... + 95516.

It is an arithmetic number, because the mean of its divisors is an integer number (1447173).

Almost surely, 2^53047566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53047566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69464304).

53047566 is an abundant number, since it is smaller than the sum of its proper divisors (85881042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53047566 is a wasteful number, since it uses less digits than its factorization.

53047566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 53047566 is about 7283.3760029261. The cubic root of 53047566 is about 375.7409138271.

The spelling of 53047566 in words is "fifty-three million, forty-seven thousand, five hundred sixty-six".