373561 has 2 divisors, whose sum is σ = 373562. Its totient is φ = 373560.

The previous prime is 373553. The next prime is 373567. The reversal of 373561 is 165373.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308025 + 65536 = 555^2 + 256^2 .

It is a cyclic number.

It is not a de Polignac number, because 373561 - 2³ = 373553 is a prime.

It is not a weakly prime, because it can be changed into another prime (373567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186780 + 186781.

It is an arithmetic number, because the mean of its divisors is an integer number (186781).

2³⁷³⁵⁶¹ is an apocalyptic number.

It is an amenable number.

373561 is a deficient number, since it is larger than the sum of its proper divisors (1).

373561 is an equidigital number, since it uses as much as digits as its factorization.

373561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 25.

The square root of 373561 is about 611.1963677903. The cubic root of 373561 is about 72.0201204056.

The spelling of 373561 in words is "three hundred seventy-three thousand, five hundred sixty-one".