261248152 has 24 divisors (see below), whose sum is σ = 534681540. Its totient is φ = 118680240.

The previous prime is 261248149. The next prime is 261248159. The reversal of 261248152 is 251842162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261248159) 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 5 ways as a sum of consecutive naturals, for example, 150763 + ... + 152485.

Almost surely, 2^261248152 is an apocalyptic number.

261248152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

261248152 is an abundant number, since it is smaller than the sum of its proper divisors (273433388).

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

261248152 is an equidigital number, since it uses as much as digits as its factorization.

261248152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463 (or 1736 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 261248152 is about 16163.1727083515. The cubic root of 261248152 is about 639.2701249765.

The spelling of 261248152 in words is "two hundred sixty-one million, two hundred forty-eight thousand, one hundred fifty-two".