354016521 has 16 divisors (see below), whose sum is σ = 534366720. Its totient is φ = 231557040.

The previous prime is 354016513. The next prime is 354016541. The reversal of 354016521 is 125610453.

354016521 is a `hidden beast` number, since 3 + 5 + 4 + 0 + 1 + 652 + 1 = 666.

It is not a de Polignac number, because 354016521 - 2³ = 354016513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (354016501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122265 + ... + 125126.

It is an arithmetic number, because the mean of its divisors is an integer number (33397920).

Almost surely, 2^354016521 is an apocalyptic number.

It is an amenable number.

354016521 is a deficient number, since it is larger than the sum of its proper divisors (180350199).

354016521 is a wasteful number, since it uses less digits than its factorization.

354016521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247453 (or 247447 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 354016521 is about 18815.3267577260. The cubic root of 354016521 is about 707.4154000738.

Adding to 354016521 its reverse (125610453), we get a palindrome (479626974).

The spelling of 354016521 in words is "three hundred fifty-four million, sixteen thousand, five hundred twenty-one".