53977820 has 96 divisors (see below), whose sum is σ = 130131456. Its totient is φ = 18662400.

The previous prime is 53977811. The next prime is 53977829. The reversal of 53977820 is 2877935.

It is an interprime number because it is at equal distance from previous prime (53977811) and next prime (53977829).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53977829) 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, 298130 + ... + 298310.

It is an arithmetic number, because the mean of its divisors is an integer number (1355536).

Almost surely, 2^53977820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53977820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65065728).

53977820 is an abundant number, since it is smaller than the sum of its proper divisors (76153636).

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

53977820 is a wasteful number, since it uses less digits than its factorization.

53977820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 53977820 is about 7346.9599155025. The cubic root of 53977820 is about 377.9245577910.

The spelling of 53977820 in words is "fifty-three million, nine hundred seventy-seven thousand, eight hundred twenty".