52781958 has 48 divisors (see below), whose sum is σ = 118559376. Its totient is φ = 16960320.

The previous prime is 52781947. The next prime is 52781959. The reversal of 52781958 is 85918725.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52781959) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57741 + ... + 58647.

It is an arithmetic number, because the mean of its divisors is an integer number (2469987).

Almost surely, 2^52781958 is an apocalyptic number.

52781958 is an abundant number, since it is smaller than the sum of its proper divisors (65777418).

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

52781958 is a wasteful number, since it uses less digits than its factorization.

52781958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029 (or 1026 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 52781958 is about 7265.1192694959. The cubic root of 52781958 is about 375.1127554265.

The spelling of 52781958 in words is "fifty-two million, seven hundred eighty-one thousand, nine hundred fifty-eight".