53801387 has 4 divisors (see below), whose sum is σ = 54334176. Its totient is φ = 53268600.

The previous prime is 53801381. The next prime is 53801411. The reversal of 53801387 is 78310835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78310835 = 5 ⋅15662167.

It is a cyclic number.

It is not a de Polignac number, because 53801387 - 2⁸ = 53801131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53801381) 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, 266243 + ... + 266444.

It is an arithmetic number, because the mean of its divisors is an integer number (13583544).

Almost surely, 2^53801387 is an apocalyptic number.

53801387 is a deficient number, since it is larger than the sum of its proper divisors (532789).

53801387 is a wasteful number, since it uses less digits than its factorization.

53801387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532788.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 53801387 is about 7334.9428763965. The cubic root of 53801387 is about 377.5123443765.

The spelling of 53801387 in words is "fifty-three million, eight hundred one thousand, three hundred eighty-seven".