61051040 has 24 divisors (see below), whose sum is σ = 144233460. Its totient is φ = 24420352.

The previous prime is 61051037. The next prime is 61051051. The reversal of 61051040 is 4015016.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54228496 + 6822544 = 7364^2 + 2612^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190625 + ... + 190944.

Almost surely, 2^61051040 is an apocalyptic number.

It is an amenable number.

61051040 is an abundant number, since it is smaller than the sum of its proper divisors (83182420).

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

61051040 is a wasteful number, since it uses less digits than its factorization.

61051040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381584 (or 381576 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 61051040 is about 7813.5164938714. The cubic root of 61051040 is about 393.7594794056.

Adding to 61051040 its reverse (4015016), we get a palindrome (65066056).

The spelling of 61051040 in words is "sixty-one million, fifty-one thousand, forty".