354551021 has 4 divisors (see below), whose sum is σ = 386782944. Its totient is φ = 322319100.

The previous prime is 354551011. The next prime is 354551081. The reversal of 354551021 is 120155453.

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 354551021 - 2¹⁴ = 354534637 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 (354551011) 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, 16115945 + ... + 16115966.

It is an arithmetic number, because the mean of its divisors is an integer number (96695736).

Almost surely, 2^354551021 is an apocalyptic number.

It is an amenable number.

354551021 is a deficient number, since it is larger than the sum of its proper divisors (32231923).

354551021 is a wasteful number, since it uses less digits than its factorization.

354551021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32231922.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 354551021 is about 18829.5252462721. The cubic root of 354551021 is about 707.7712435390.

The spelling of 354551021 in words is "three hundred fifty-four million, five hundred fifty-one thousand, twenty-one".