61303445 has 32 divisors (see below), whose sum is σ = 89641728. Its totient is φ = 39287808.

The previous prime is 61303439. The next prime is 61303469. The reversal of 61303445 is 54430316.

It is not a de Polignac number, because 61303445 - 2¹⁶ = 61237909 is a prime.

It is a super-2 number, since 2×61303445² = 7516224737736050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116954 + ... + 117476.

It is an arithmetic number, because the mean of its divisors is an integer number (2801304).

Almost surely, 2^61303445 is an apocalyptic number.

It is an amenable number.

61303445 is a deficient number, since it is larger than the sum of its proper divisors (28338283).

61303445 is a wasteful number, since it uses less digits than its factorization.

61303445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 61303445 is about 7829.6516525322. The cubic root of 61303445 is about 394.3013768583.

The spelling of 61303445 in words is "sixty-one million, three hundred three thousand, four hundred forty-five".