208251045 has 24 divisors (see below), whose sum is σ = 367783416. Its totient is φ = 108970368.

The previous prime is 208251041. The next prime is 208251047. The reversal of 208251045 is 540152802.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17313921 + 190937124 = 4161^2 + 13818^2 .

It is not a de Polignac number, because 208251045 - 2² = 208251041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208251041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41274 + ... + 46043.

It is an arithmetic number, because the mean of its divisors is an integer number (15324309).

Almost surely, 2^208251045 is an apocalyptic number.

It is an amenable number.

208251045 is a deficient number, since it is larger than the sum of its proper divisors (159532371).

208251045 is a wasteful number, since it uses less digits than its factorization.

208251045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87381 (or 87378 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 208251045 is about 14430.9058967204. The cubic root of 208251045 is about 592.7374895840.

The spelling of 208251045 in words is "two hundred eight million, two hundred fifty-one thousand, forty-five".