53361861 has 32 divisors (see below), whose sum is σ = 90639360. Its totient is φ = 27184896.

The previous prime is 53361859. The next prime is 53361871. The reversal of 53361861 is 16816335.

It is not a de Polignac number, because 53361861 - 2¹ = 53361859 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53361811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2850 + ... + 10716.

It is an arithmetic number, because the mean of its divisors is an integer number (2832480).

Almost surely, 2^53361861 is an apocalyptic number.

53361861 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

53361861 is a deficient number, since it is larger than the sum of its proper divisors (37277499).

53361861 is a wasteful number, since it uses less digits than its factorization.

53361861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7913.

The product of its digits is 12960, while the sum is 33.

The square root of 53361861 is about 7304.9203281076. The cubic root of 53361861 is about 376.4815134951.

The spelling of 53361861 in words is "fifty-three million, three hundred sixty-one thousand, eight hundred sixty-one".