52138950 has 48 divisors (see below), whose sum is σ = 130046736. Its totient is φ = 13824000.

The previous prime is 52138937. The next prime is 52138987. The reversal of 52138950 is 5983125.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28050 + ... + 29850.

It is an arithmetic number, because the mean of its divisors is an integer number (2709307).

Almost surely, 2^52138950 is an apocalyptic number.

52138950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

52138950 is the 3860-th nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52138950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65023368).

52138950 is an abundant number, since it is smaller than the sum of its proper divisors (77907786).

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

52138950 is a wasteful number, since it uses less digits than its factorization.

52138950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009 (or 2004 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 52138950 is about 7220.7305724559. The cubic root of 52138950 is about 373.5832766825.

The spelling of 52138950 in words is "fifty-two million, one hundred thirty-eight thousand, nine hundred fifty".