52449780 has 48 divisors (see below), whose sum is σ = 148002624. Its totient is φ = 13877760.

The previous prime is 52449779. The next prime is 52449797. The reversal of 52449780 is 8794425.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4524 + ... + 11196.

It is an arithmetic number, because the mean of its divisors is an integer number (3083388).

Almost surely, 2^52449780 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 52449780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74001312).

52449780 is an abundant number, since it is smaller than the sum of its proper divisors (95552844).

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

52449780 is a wasteful number, since it uses less digits than its factorization.

52449780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6816 (or 6814 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 52449780 is about 7242.2220347073. Note that the first 3 decimals coincide. The cubic root of 52449780 is about 374.3241872484.

The spelling of 52449780 in words is "fifty-two million, four hundred forty-nine thousand, seven hundred eighty".