261954050 has 12 divisors (see below), whose sum is σ = 487234626. Its totient is φ = 104781600.

The previous prime is 261954031. The next prime is 261954053. The reversal of 261954050 is 50459162.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 213247609 + 48706441 = 14603^2 + 6979^2 .

It is a super-2 number, since 2×261954050² = 137239848622805000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 261953998 and 261954016.

It is not an unprimeable number, because it can be changed into a prime (261954053) 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, 2619491 + ... + 2619590.

Almost surely, 2^261954050 is an apocalyptic number.

261954050 is a deficient number, since it is larger than the sum of its proper divisors (225280576).

261954050 is a wasteful number, since it uses less digits than its factorization.

261954050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5239093 (or 5239088 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 261954050 is about 16184.9945937588. The cubic root of 261954050 is about 639.8453809425.

The spelling of 261954050 in words is "two hundred sixty-one million, nine hundred fifty-four thousand, fifty".