3551257990 has 16 divisors (see below), whose sum is σ = 7305445152. Its totient is φ = 1217574144.

The previous prime is 3551257981. The next prime is 3551257991. The reversal of 3551257990 is 997521553.

It is a super-2 number, since 2×3551257990² = 25222866623077680200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3551257990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551257991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25366059 + ... + 25366198.

It is an arithmetic number, because the mean of its divisors is an integer number (456590322).

Almost surely, 2^3551257990 is an apocalyptic number.

3551257990 is an abundant number, since it is smaller than the sum of its proper divisors (3754187162).

3551257990 is a wasteful number, since it uses less digits than its factorization.

3551257990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50732271.

The product of its (nonzero) digits is 425250, while the sum is 46.

The square root of 3551257990 is about 59592.4323215624. The cubic root of 3551257990 is about 1525.6704732533.

The spelling of 3551257990 in words is "three billion, five hundred fifty-one million, two hundred fifty-seven thousand, nine hundred ninety".