161154552 has 32 divisors (see below), whose sum is σ = 433878480. Its totient is φ = 49585920.

The previous prime is 161154529. The next prime is 161154563. The reversal of 161154552 is 255451161.

161154552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×161154552³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257949 + ... + 258572.

Almost surely, 2^161154552 is an apocalyptic number.

161154552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161154552 is an abundant number, since it is smaller than the sum of its proper divisors (272723928).

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

161154552 is a wasteful number, since it uses less digits than its factorization.

161154552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516543 (or 516539 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

The square root of 161154552 is about 12694.6662815531. Note that the first 3 decimals coincide. The cubic root of 161154552 is about 544.1862017579.

The spelling of 161154552 in words is "one hundred sixty-one million, one hundred fifty-four thousand, five hundred fifty-two".