52450640 has 80 divisors (see below), whose sum is σ = 140080320. Its totient is φ = 18063360.

The previous prime is 52450639. The next prime is 52450663. The reversal of 52450640 is 4605425.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15152 + ... + 18288.

It is an arithmetic number, because the mean of its divisors is an integer number (1751004).

Almost surely, 2^52450640 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 52450640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70040160).

52450640 is an abundant number, since it is smaller than the sum of its proper divisors (87629680).

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

52450640 is a wasteful number, since it uses less digits than its factorization.

52450640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180 (or 3174 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 52450640 is about 7242.2814085066. The cubic root of 52450640 is about 374.3262331232.

The spelling of 52450640 in words is "fifty-two million, four hundred fifty thousand, six hundred forty".