53061780 has 24 divisors (see below), whose sum is σ = 148573152. Its totient is φ = 14149792.

The previous prime is 53061773. The next prime is 53061781. The reversal of 53061780 is 8716035.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53061781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442122 + ... + 442241.

It is an arithmetic number, because the mean of its divisors is an integer number (6190548).

Almost surely, 2^53061780 is an apocalyptic number.

It is an amenable number.

53061780 is an abundant number, since it is smaller than the sum of its proper divisors (95511372).

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

53061780 is a wasteful number, since it uses less digits than its factorization.

53061780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884375 (or 884373 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 53061780 is about 7284.3517213270. The cubic root of 53061780 is about 375.7744705311.

The spelling of 53061780 in words is "fifty-three million, sixty-one thousand, seven hundred eighty".