211253542 has 16 divisors (see below), whose sum is σ = 323350272. Its totient is φ = 103488840.

The previous prime is 211253531. The next prime is 211253563. The reversal of 211253542 is 245352112.

It is a congruent number.

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, 18583 + ... + 27709.

It is an arithmetic number, because the mean of its divisors is an integer number (20209392).

Almost surely, 2^211253542 is an apocalyptic number.

211253542 is a deficient number, since it is larger than the sum of its proper divisors (112096730).

211253542 is a wasteful number, since it uses less digits than its factorization.

211253542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9363.

The product of its digits is 2400, while the sum is 25.

The square root of 211253542 is about 14534.5637017421. The cubic root of 211253542 is about 595.5725411889.

The spelling of 211253542 in words is "two hundred eleven million, two hundred fifty-three thousand, five hundred forty-two".