61575481 has 8 divisors (see below), whose sum is σ = 68812128. Its totient is φ = 54612000.

The previous prime is 61575467. The next prime is 61575491. The reversal of 61575481 is 18457516.

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

It is not a de Polignac number, because 61575481 - 2¹⁵ = 61542713 is a prime.

It is a super-2 number, since 2×61575481² = 7583079720762722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61575481.

It is not an unprimeable number, because it can be changed into a prime (61575421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67815 + ... + 68716.

It is an arithmetic number, because the mean of its divisors is an integer number (8601516).

Almost surely, 2^61575481 is an apocalyptic number.

It is an amenable number.

61575481 is a deficient number, since it is larger than the sum of its proper divisors (7236647).

61575481 is a wasteful number, since it uses less digits than its factorization.

61575481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136583.

The product of its digits is 33600, while the sum is 37.

The square root of 61575481 is about 7847.0045877392. The cubic root of 61575481 is about 394.8837579225.

The spelling of 61575481 in words is "sixty-one million, five hundred seventy-five thousand, four hundred eighty-one".