61536145 has 16 divisors (see below), whose sum is σ = 80709120. Its totient is φ = 44668800.

The previous prime is 61536131. The next prime is 61536151. The reversal of 61536145 is 54163516.

It is not a de Polignac number, because 61536145 - 2¹³ = 61527953 is a prime.

It is a super-2 number, since 2×61536145² = 7573394282922050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53941 + ... + 55069.

It is an arithmetic number, because the mean of its divisors is an integer number (5044320).

Almost surely, 2^61536145 is an apocalyptic number.

It is an amenable number.

61536145 is a deficient number, since it is larger than the sum of its proper divisors (19172975).

61536145 is a wasteful number, since it uses less digits than its factorization.

61536145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136.

The product of its digits is 10800, while the sum is 31.

The square root of 61536145 is about 7844.4977532026. The cubic root of 61536145 is about 394.7996527122.

The spelling of 61536145 in words is "sixty-one million, five hundred thirty-six thousand, one hundred forty-five".