261502252 has 24 divisors (see below), whose sum is σ = 499790592. Its totient is φ = 118731600.

The previous prime is 261502243. The next prime is 261502261. The reversal of 261502252 is 252205162.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (261502243) and next prime (261502261).

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, 43977 + ... + 49567.

It is an arithmetic number, because the mean of its divisors is an integer number (20824608).

Almost surely, 2^261502252 is an apocalyptic number.

261502252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

261502252 is a deficient number, since it is larger than the sum of its proper divisors (238288340).

261502252 is a wasteful number, since it uses less digits than its factorization.

261502252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6669 (or 6667 counting only the distinct ones).

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

The square root of 261502252 is about 16171.0312596321. The cubic root of 261502252 is about 639.4773173863.

The spelling of 261502252 in words is "two hundred sixty-one million, five hundred two thousand, two hundred fifty-two".