61502545 has 8 divisors (see below), whose sum is σ = 79480296. Its totient is φ = 45417216.

The previous prime is 61502537. The next prime is 61502561. The reversal of 61502545 is 54520516.

61502545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1718721 + 59783824 = 1311^2 + 7732^2 .

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

It is not a de Polignac number, because 61502545 - 2³ = 61502537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 473032 + ... + 473161.

It is an arithmetic number, because the mean of its divisors is an integer number (9935037).

Almost surely, 2^61502545 is an apocalyptic number.

61502545 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61502545 is a deficient number, since it is larger than the sum of its proper divisors (17977751).

61502545 is a wasteful number, since it uses less digits than its factorization.

61502545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946211.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 61502545 is about 7842.3558322739. The cubic root of 61502545 is about 394.7277833882.

The spelling of 61502545 in words is "sixty-one million, five hundred two thousand, five hundred forty-five".