61031445 has 32 divisors (see below), whose sum is σ = 104208768. Its totient is φ = 30394368.

The previous prime is 61031437. The next prime is 61031471. The reversal of 61031445 is 54413016.

It is not a de Polignac number, because 61031445 - 2³ = 61031437 is a prime.

It is a super-3 number, since 3×61031445³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 34062 + ... + 35808.

It is an arithmetic number, because the mean of its divisors is an integer number (3256524).

Almost surely, 2^61031445 is an apocalyptic number.

It is an amenable number.

61031445 is a deficient number, since it is larger than the sum of its proper divisors (43177323).

61031445 is a wasteful number, since it uses less digits than its factorization.

61031445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 61031445 is about 7812.2624763893. The cubic root of 61031445 is about 393.7173477585.

The spelling of 61031445 in words is "sixty-one million, thirty-one thousand, four hundred forty-five".