211632045 has 16 divisors (see below), whose sum is σ = 347763840. Its totient is φ = 109819584.

The previous prime is 211632041. The next prime is 211632049. The reversal of 211632045 is 540236112.

It is an interprime number because it is at equal distance from previous prime (211632041) and next prime (211632049).

It is not a de Polignac number, because 211632045 - 2² = 211632041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211632041) 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, 190105 + ... + 191214.

It is an arithmetic number, because the mean of its divisors is an integer number (21735240).

Almost surely, 2^211632045 is an apocalyptic number.

It is an amenable number.

211632045 is a deficient number, since it is larger than the sum of its proper divisors (136131795).

211632045 is a wasteful number, since it uses less digits than its factorization.

211632045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381364.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 211632045 is about 14547.5786645063. The cubic root of 211632045 is about 595.9280247678.

Adding to 211632045 its reverse (540236112), we get a palindrome (751868157).

The spelling of 211632045 in words is "two hundred eleven million, six hundred thirty-two thousand, forty-five".