429052521 has 4 divisors (see below), whose sum is σ = 572070032. Its totient is φ = 286035012.

The previous prime is 429052513. The next prime is 429052529. The reversal of 429052521 is 125250924.

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 an interprime number because it is at equal distance from previous prime (429052513) and next prime (429052529).

It is not a de Polignac number, because 429052521 - 2³ = 429052513 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (429052529) 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, 71508751 + ... + 71508756.

It is an arithmetic number, because the mean of its divisors is an integer number (143017508).

Almost surely, 2^429052521 is an apocalyptic number.

It is an amenable number.

429052521 is a deficient number, since it is larger than the sum of its proper divisors (143017511).

429052521 is a wasteful number, since it uses less digits than its factorization.

429052521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143017510.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 429052521 is about 20713.5830072926. The cubic root of 429052521 is about 754.2294499479.

The spelling of 429052521 in words is "four hundred twenty-nine million, fifty-two thousand, five hundred twenty-one".