261130452 has 48 divisors (see below), whose sum is σ = 699686400. Its totient is φ = 74964960.

The previous prime is 261130439. The next prime is 261130459. The reversal of 261130452 is 254031162.

It is a super-2 number, since 2×261130452² = 136378225923448608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261130459) 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, 49552 + ... + 54567.

It is an arithmetic number, because the mean of its divisors is an integer number (14576800).

Almost surely, 2^261130452 is an apocalyptic number.

261130452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

261130452 is an abundant number, since it is smaller than the sum of its proper divisors (438555948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261130452 is a wasteful number, since it uses less digits than its factorization.

261130452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104156 (or 104154 counting only the distinct ones).

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

The square root of 261130452 is about 16159.5313050843. The cubic root of 261130452 is about 639.1741072049.

The spelling of 261130452 in words is "two hundred sixty-one million, one hundred thirty thousand, four hundred fifty-two".