53781400 has 48 divisors (see below), whose sum is σ = 131632200. Its totient is φ = 20378880.

The previous prime is 53781367. The next prime is 53781407. The reversal of 53781400 is 418735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53781407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3277 + ... + 10876.

Almost surely, 2^53781400 is an apocalyptic number.

53781400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53781400 is an abundant number, since it is smaller than the sum of its proper divisors (77850800).

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

53781400 is a wasteful number, since it uses less digits than its factorization.

53781400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14188 (or 14179 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 53781400 is about 7333.5802988718. The cubic root of 53781400 is about 377.4655904779.

The spelling of 53781400 in words is "fifty-three million, seven hundred eighty-one thousand, four hundred".