52750290 has 32 divisors (see below), whose sum is σ = 127370880. Its totient is φ = 13981184.

The previous prime is 52750279. The next prime is 52750297. The reversal of 52750290 is 9205725.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (52750297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255 + ... + 10274.

It is an arithmetic number, because the mean of its divisors is an integer number (3980340).

Almost surely, 2^52750290 is an apocalyptic number.

52750290 is an abundant number, since it is smaller than the sum of its proper divisors (74620590).

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

52750290 is a wasteful number, since it uses less digits than its factorization.

52750290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10706.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 52750290 is about 7262.9394875629. The cubic root of 52750290 is about 375.0377206501.

The spelling of 52750290 in words is "fifty-two million, seven hundred fifty thousand, two hundred ninety".