53700144 has 40 divisors (see below), whose sum is σ = 146887920. Its totient is φ = 16846848.

The previous prime is 53700139. The next prime is 53700149. The reversal of 53700144 is 44100735.

It is an interprime number because it is at equal distance from previous prime (53700139) and next prime (53700149).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53700149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32089 + ... + 33720.

It is an arithmetic number, because the mean of its divisors is an integer number (3672198).

Almost surely, 2^53700144 is an apocalyptic number.

It is an amenable number.

53700144 is an abundant number, since it is smaller than the sum of its proper divisors (93187776).

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

53700144 is a wasteful number, since it uses less digits than its factorization.

53700144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65837 (or 65831 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 53700144 is about 7328.0382095074. The cubic root of 53700144 is about 377.2753958278.

Adding to 53700144 its reverse (44100735), we get a palindrome (97800879).

The spelling of 53700144 in words is "fifty-three million, seven hundred thousand, one hundred forty-four".