61450045 has 4 divisors (see below), whose sum is σ = 73740060. Its totient is φ = 49160032.

The previous prime is 61450031. The next prime is 61450057. The reversal of 61450045 is 54005416.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41718681 + 19731364 = 6459^2 + 4442^2 .

It is a cyclic number.

It is not a de Polignac number, because 61450045 - 2²¹ = 59352893 is a prime.

It is a super-2 number, since 2×61450045² = 7552216061004050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6145000 + ... + 6145009.

It is an arithmetic number, because the mean of its divisors is an integer number (18435015).

Almost surely, 2^61450045 is an apocalyptic number.

It is an amenable number.

61450045 is a deficient number, since it is larger than the sum of its proper divisors (12290015).

61450045 is a wasteful number, since it uses less digits than its factorization.

61450045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12290014.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 61450045 is about 7839.0079091681. The cubic root of 61450045 is about 394.6154351484.

The spelling of 61450045 in words is "sixty-one million, four hundred fifty thousand, forty-five".