1661010552 has 48 divisors (see below), whose sum is σ = 4735341000. Its totient is φ = 524529216.

The previous prime is 1661010523. The next prime is 1661010553. The reversal of 1661010552 is 2550101661.

It is a happy number.

1661010552 is a `hidden beast` number, since 1 + 6 + 6 + 101 + 0 + 552 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1661010553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 605727 + ... + 608462.

Almost surely, 2^1661010552 is an apocalyptic number.

1661010552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1661010552 is an abundant number, since it is smaller than the sum of its proper divisors (3074330448).

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

1661010552 is a wasteful number, since it uses less digits than its factorization.

1661010552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214220 (or 1214213 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1661010552 is about 40755.4971997644. The cubic root of 1661010552 is about 1184.2883683262.

The spelling of 1661010552 in words is "one billion, six hundred sixty-one million, ten thousand, five hundred fifty-two".