63155390 has 32 divisors (see below), whose sum is σ = 117079776. Its totient is φ = 24514560.

The previous prime is 63155371. The next prime is 63155399. The reversal of 63155390 is 9355136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63155399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82610 + ... + 83370.

It is an arithmetic number, because the mean of its divisors is an integer number (3658743).

Almost surely, 2^63155390 is an apocalyptic number.

63155390 is a deficient number, since it is larger than the sum of its proper divisors (53924386).

63155390 is a wasteful number, since it uses less digits than its factorization.

63155390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 63155390 is about 7947.0365545906. The cubic root of 63155390 is about 398.2325980611.

The spelling of 63155390 in words is "sixty-three million, one hundred fifty-five thousand, three hundred ninety".