456352021 has 4 divisors (see below), whose sum is σ = 459945472. Its totient is φ = 452758572.

The previous prime is 456351979. The next prime is 456352027. The reversal of 456352021 is 120253654.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120253654 = 2 ⋅60126827.

It is a cyclic number.

It is not a de Polignac number, because 456352021 - 2¹⁷ = 456220949 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 (456352027) 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, 1796535 + ... + 1796788.

It is an arithmetic number, because the mean of its divisors is an integer number (114986368).

Almost surely, 2^456352021 is an apocalyptic number.

It is an amenable number.

456352021 is a deficient number, since it is larger than the sum of its proper divisors (3593451).

456352021 is a wasteful number, since it uses less digits than its factorization.

456352021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593450.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 456352021 is about 21362.3973607833. The cubic root of 456352021 is about 769.8982386463.

The spelling of 456352021 in words is "four hundred fifty-six million, three hundred fifty-two thousand, twenty-one".