50528981 has 8 divisors (see below), whose sum is σ = 54511704. Its totient is φ = 46658560.

The previous prime is 50528963. The next prime is 50528983. The reversal of 50528981 is 18982505.

It can be written as a sum of positive squares in 4 ways, for example, as 8213956 + 42315025 = 2866^2 + 6505^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50528981 - 2¹⁴ = 50512597 is a prime.

It is a super-2 number, since 2×50528981² = 5106355841796722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50528983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27140 + ... + 28941.

It is an arithmetic number, because the mean of its divisors is an integer number (6813963).

Almost surely, 2^50528981 is an apocalyptic number.

It is an amenable number.

50528981 is a deficient number, since it is larger than the sum of its proper divisors (3982723).

50528981 is a wasteful number, since it uses less digits than its factorization.

50528981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56151.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 50528981 is about 7108.3740053545. The cubic root of 50528981 is about 369.6977834086.

The spelling of 50528981 in words is "fifty million, five hundred twenty-eight thousand, nine hundred eighty-one".