542221851 has 8 divisors (see below), whose sum is σ = 765489744. Its totient is φ = 340217600.

The previous prime is 542221831. The next prime is 542221871. The reversal of 542221851 is 158122245.

It is an interprime number because it is at equal distance from previous prime (542221831) and next prime (542221871).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 542221851 - 2¹⁴ = 542205467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (542221831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5315850 + ... + 5315951.

It is an arithmetic number, because the mean of its divisors is an integer number (95686218).

Almost surely, 2^542221851 is an apocalyptic number.

542221851 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

542221851 is a deficient number, since it is larger than the sum of its proper divisors (223267893).

542221851 is a wasteful number, since it uses less digits than its factorization.

542221851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10631821.

The product of its digits is 6400, while the sum is 30.

The square root of 542221851 is about 23285.6576243833. The cubic root of 542221851 is about 815.4406143700.

The spelling of 542221851 in words is "five hundred forty-two million, two hundred twenty-one thousand, eight hundred fifty-one".