1551655602 has 96 divisors (see below), whose sum is σ = 4077545472. Its totient is φ = 432979344.

The previous prime is 1551655583. The next prime is 1551655607. The reversal of 1551655602 is 2065561551.

1551655602 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1551655607) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140983 + ... + 151589.

It is an arithmetic number, because the mean of its divisors is an integer number (42474432).

Almost surely, 2^1551655602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1551655602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2038772736).

1551655602 is an abundant number, since it is smaller than the sum of its proper divisors (2525889870).

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

1551655602 is a wasteful number, since it uses less digits than its factorization.

1551655602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10674 (or 10662 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 1551655602 is about 39391.0599248104. The cubic root of 1551655602 is about 1157.7064277688.

The spelling of 1551655602 in words is "one billion, five hundred fifty-one million, six hundred fifty-five thousand, six hundred two".