42551650 has 12 divisors (see below), whose sum is σ = 79146162. Its totient is φ = 17020640.

The previous prime is 42551647. The next prime is 42551657. The reversal of 42551650 is 5615524.

It can be written as a sum of positive squares in 3 ways, for example, as 38353249 + 4198401 = 6193^2 + 2049^2 .

It is not an unprimeable number, because it can be changed into a prime (42551657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 425467 + ... + 425566.

Almost surely, 2^42551650 is an apocalyptic number.

42551650 is a deficient number, since it is larger than the sum of its proper divisors (36594512).

42551650 is a wasteful number, since it uses less digits than its factorization.

42551650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851045 (or 851040 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 42551650 is about 6523.1625765421. The cubic root of 42551650 is about 349.1179148528.

The spelling of 42551650 in words is "forty-two million, five hundred fifty-one thousand, six hundred fifty".