521542354 has 16 divisors (see below), whose sum is σ = 836379648. Its totient is φ = 243047232.

The previous prime is 521542349. The next prime is 521542367. The reversal of 521542354 is 453245125.

It is a super-2 number, since 2×521542354² = 544012854031722632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70962 + ... + 77965.

It is an arithmetic number, because the mean of its divisors is an integer number (52273728).

Almost surely, 2^521542354 is an apocalyptic number.

521542354 is a deficient number, since it is larger than the sum of its proper divisors (314837294).

521542354 is a wasteful number, since it uses less digits than its factorization.

521542354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149049.

The product of its digits is 24000, while the sum is 31.

The square root of 521542354 is about 22837.3018108532. The cubic root of 521542354 is about 804.9394159876.

Adding to 521542354 its reverse (453245125), we get a palindrome (974787479).

The spelling of 521542354 in words is "five hundred twenty-one million, five hundred forty-two thousand, three hundred fifty-four".