421352501 has 4 divisors (see below), whose sum is σ = 421503552. Its totient is φ = 421201452.

The previous prime is 421352473. The next prime is 421352539. The reversal of 421352501 is 105253124.

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 421352501 - 2¹⁴ = 421336117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421352551) 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, 71261 + ... + 76946.

It is an arithmetic number, because the mean of its divisors is an integer number (105375888).

Almost surely, 2^421352501 is an apocalyptic number.

It is an amenable number.

421352501 is a deficient number, since it is larger than the sum of its proper divisors (151051).

421352501 is a wasteful number, since it uses less digits than its factorization.

421352501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151050.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 421352501 is about 20526.8726551319. The cubic root of 421352501 is about 749.6902430481.

The spelling of 421352501 in words is "four hundred twenty-one million, three hundred fifty-two thousand, five hundred one".