61540322 has 4 divisors (see below), whose sum is σ = 92310486. Its totient is φ = 30770160.

The previous prime is 61540321. The next prime is 61540327. The reversal of 61540322 is 22304516.

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

It can be written as a sum of positive squares in only one way, i.e., 32821441 + 28718881 = 5729^2 + 5359^2 .

It is a super-2 number, since 2×61540322² = 7574422463727368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61540321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15385079 + ... + 15385082.

Almost surely, 2^61540322 is an apocalyptic number.

61540322 is a deficient number, since it is larger than the sum of its proper divisors (30770164).

61540322 is a wasteful number, since it uses less digits than its factorization.

61540322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30770163.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 61540322 is about 7844.7639862522. The cubic root of 61540322 is about 394.8085853530.

Adding to 61540322 its reverse (22304516), we get a palindrome (83844838).

The spelling of 61540322 in words is "sixty-one million, five hundred forty thousand, three hundred twenty-two".