53751481 has 6 divisors (see below), whose sum is σ = 62527290. Its totient is φ = 46072656.

The previous prime is 53751479. The next prime is 53751499. The reversal of 53751481 is 18415735.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40755456 + 12996025 = 6384^2 + 3605^2 .

It is not a de Polignac number, because 53751481 - 2¹ = 53751479 is a prime.

It is a super-2 number, since 2×53751481² = 5778443419386722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53751881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 548436 + ... + 548533.

It is an arithmetic number, because the mean of its divisors is an integer number (10421215).

Almost surely, 2^53751481 is an apocalyptic number.

It is an amenable number.

53751481 is a deficient number, since it is larger than the sum of its proper divisors (8775809).

53751481 is a wasteful number, since it uses less digits than its factorization.

53751481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096983 (or 1096976 counting only the distinct ones).

The product of its digits is 16800, while the sum is 34.

The square root of 53751481 is about 7331.5401519735. The cubic root of 53751481 is about 377.3955818390.

The spelling of 53751481 in words is "fifty-three million, seven hundred fifty-one thousand, four hundred eighty-one".