61026145 has 4 divisors (see below), whose sum is σ = 73231380. Its totient is φ = 48820912.

The previous prime is 61026137. The next prime is 61026149. The reversal of 61026145 is 54162016.

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 34058896 + 26967249 = 5836^2 + 5193^2 .

It is a cyclic number.

It is not a de Polignac number, because 61026145 - 2³ = 61026137 is a prime.

It is a super-2 number, since 2×61026145² = 7448380747122050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61026149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6102610 + ... + 6102619.

It is an arithmetic number, because the mean of its divisors is an integer number (18307845).

Almost surely, 2^61026145 is an apocalyptic number.

It is an amenable number.

61026145 is a deficient number, since it is larger than the sum of its proper divisors (12205235).

61026145 is a wasteful number, since it uses less digits than its factorization.

61026145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12205234.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 61026145 is about 7811.9232587116. The cubic root of 61026145 is about 393.7059505607.

The spelling of 61026145 in words is "sixty-one million, twenty-six thousand, one hundred forty-five".