529420381 has 4 divisors (see below), whose sum is σ = 605051872. Its totient is φ = 453788892.

The previous prime is 529420379. The next prime is 529420439. The reversal of 529420381 is 183024925.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 529420381 - 2¹ = 529420379 is a prime.

It is a super-2 number, since 2×529420381² = 560571879636370322, 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 (529420301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37815735 + ... + 37815748.

It is an arithmetic number, because the mean of its divisors is an integer number (151262968).

Almost surely, 2^529420381 is an apocalyptic number.

It is an amenable number.

529420381 is a deficient number, since it is larger than the sum of its proper divisors (75631491).

529420381 is an equidigital number, since it uses as much as digits as its factorization.

529420381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75631490.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 529420381 is about 23009.1369025437. The cubic root of 529420381 is about 808.9721153672.

The spelling of 529420381 in words is "five hundred twenty-nine million, four hundred twenty thousand, three hundred eighty-one".