61371040 has 48 divisors (see below), whose sum is σ = 145461960. Its totient is φ = 24468480.

The previous prime is 61371029. The next prime is 61371053. The reversal of 61371040 is 4017316.

It can be written as a sum of positive squares in 4 ways, for example, as 34621456 + 26749584 = 5884^2 + 5172^2 .

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 7 ways as a sum of consecutive naturals, for example, 86206 + ... + 86914.

Almost surely, 2^61371040 is an apocalyptic number.

It is an amenable number.

61371040 is an abundant number, since it is smaller than the sum of its proper divisors (84090920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61371040 is a wasteful number, since it uses less digits than its factorization.

61371040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265 (or 1257 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 61371040 is about 7833.9670665634. The cubic root of 61371040 is about 394.4462464302.

Adding to 61371040 its reverse (4017316), we get a palindrome (65388356).

The spelling of 61371040 in words is "sixty-one million, three hundred seventy-one thousand, forty".