61098261 has 32 divisors (see below), whose sum is σ = 96165888. Its totient is φ = 33782400.

The previous prime is 61098253. The next prime is 61098283. The reversal of 61098261 is 16289016.

It is not a de Polignac number, because 61098261 - 2³ = 61098253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61098361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101361 + ... + 101961.

It is an arithmetic number, because the mean of its divisors is an integer number (3005184).

Almost surely, 2^61098261 is an apocalyptic number.

It is an amenable number.

61098261 is a deficient number, since it is larger than the sum of its proper divisors (35067627).

61098261 is a wasteful number, since it uses less digits than its factorization.

61098261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 61098261 is about 7816.5376606270. The cubic root of 61098261 is about 393.8609733062.

The spelling of 61098261 in words is "sixty-one million, ninety-eight thousand, two hundred sixty-one".