261055102 has 16 divisors (see below), whose sum is σ = 488207232. Its totient is φ = 101709720.

The previous prime is 261055087. The next prime is 261055103. The reversal of 261055102 is 201550162.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261055103) 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, 847428 + ... + 847735.

It is an arithmetic number, because the mean of its divisors is an integer number (30512952).

Almost surely, 2^261055102 is an apocalyptic number.

261055102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

261055102 is a deficient number, since it is larger than the sum of its proper divisors (227152130).

261055102 is a wasteful number, since it uses less digits than its factorization.

261055102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695183.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 261055102 is about 16157.1996954918. The cubic root of 261055102 is about 639.1126227352.

The spelling of 261055102 in words is "two hundred sixty-one million, fifty-five thousand, one hundred two".