375661261 has 8 divisors (see below), whose sum is σ = 381144960. Its totient is φ = 370217568.

The previous prime is 375661243. The next prime is 375661303. The reversal of 375661261 is 162166573.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 375661261 - 2⁷ = 375661133 is a prime.

It is a super-2 number, since 2×375661261² = 282242766032220242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 375661261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (375661961) 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 7 ways as a sum of consecutive naturals, for example, 9180 + ... + 28906.

It is an arithmetic number, because the mean of its divisors is an integer number (47643120).

Almost surely, 2^375661261 is an apocalyptic number.

It is an amenable number.

375661261 is a deficient number, since it is larger than the sum of its proper divisors (5483699).

375661261 is a wasteful number, since it uses less digits than its factorization.

375661261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20003.

The product of its digits is 45360, while the sum is 37.

The square root of 375661261 is about 19381.9828964944. The cubic root of 375661261 is about 721.5484044278.

The spelling of 375661261 in words is "three hundred seventy-five million, six hundred sixty-one thousand, two hundred sixty-one".