250240761 has 9 divisors (see below), whose sum is σ = 361527439. Its totient is φ = 166795536.

The previous prime is 250240729. The next prime is 250240763. The reversal of 250240761 is 167042052.

The square root of 250240761 is 15819.

It is a perfect power (a square), and thus also a powerful number.

250240761 is a `hidden beast` number, since 250 + 2 + 407 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 123543225 + 126697536 = 11115^2 + 11256^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 250240761 - 2⁵ = 250240729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (250240763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44821 + ... + 50093.

Almost surely, 2^250240761 is an apocalyptic number.

250240761 is the 15819-th square number.

250240761 is the 7910-th centered octagonal number.

It is an amenable number.

250240761 is a deficient number, since it is larger than the sum of its proper divisors (111286678).

250240761 is an frugal number, since it uses more digits than its factorization.

250240761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10552 (or 5276 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The cubic root of 250240761 is about 630.1626866324.

It can be divided in two parts, 250240 and 761, that added together give a square (251001 = 501²).

The spelling of 250240761 in words is "two hundred fifty million, two hundred forty thousand, seven hundred sixty-one".