52561145 has 32 divisors (see below), whose sum is σ = 78086400. Its totient is φ = 33073920.

The previous prime is 52561129. The next prime is 52561183. The reversal of 52561145 is 54116525.

52561145 = T₃₆₅ + T₃₆₆ + ... + T₇₁₃.

It is a happy number.

It is not a de Polignac number, because 52561145 - 2⁴ = 52561129 is a prime.

It is a super-2 number, since 2×52561145² = 5525347927422050, which contains 22 as substring.

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, 150431 + ... + 150779.

It is an arithmetic number, because the mean of its divisors is an integer number (2440200).

Almost surely, 2^52561145 is an apocalyptic number.

It is an amenable number.

52561145 is a deficient number, since it is larger than the sum of its proper divisors (25525255).

52561145 is a wasteful number, since it uses less digits than its factorization.

52561145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705.

The product of its digits is 6000, while the sum is 29.

The square root of 52561145 is about 7249.9065511219. The cubic root of 52561145 is about 374.5889302966.

The spelling of 52561145 in words is "fifty-two million, five hundred sixty-one thousand, one hundred forty-five".