53407881 has 6 divisors (see below), whose sum is σ = 77144730. Its totient is φ = 35605248.

The previous prime is 53407847. The next prime is 53407883. The reversal of 53407881 is 18870435.

53407881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 44675856 + 8732025 = 6684^2 + 2955^2 .

It is not a de Polignac number, because 53407881 - 2¹⁸ = 53145737 is a prime.

It is a super-2 number, since 2×53407881² = 5704803505820322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53407883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2967096 + ... + 2967113.

It is an arithmetic number, because the mean of its divisors is an integer number (12857455).

Almost surely, 2^53407881 is an apocalyptic number.

It is an amenable number.

53407881 is a deficient number, since it is larger than the sum of its proper divisors (23736849).

53407881 is a wasteful number, since it uses less digits than its factorization.

53407881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5934215 (or 5934212 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 53407881 is about 7308.0695809495. The cubic root of 53407881 is about 376.5897100027.

The spelling of 53407881 in words is "fifty-three million, four hundred seven thousand, eight hundred eighty-one".