161077530 has 16 divisors (see below), whose sum is σ = 386586144. Its totient is φ = 42954000.

The previous prime is 161077523. The next prime is 161077537. The reversal of 161077530 is 35770161.

161077530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161077523) and next prime (161077537).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 5369251 = 161077530 / (1 + 6 + 1 + 0 + 7 + 7 + 5 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (161077537) 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, 2684596 + ... + 2684655.

It is an arithmetic number, because the mean of its divisors is an integer number (24161634).

Almost surely, 2^161077530 is an apocalyptic number.

161077530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161077530 is an abundant number, since it is smaller than the sum of its proper divisors (225508614).

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

161077530 is a wasteful number, since it uses less digits than its factorization.

161077530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369261.

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 161077530 is about 12691.6322827286. The cubic root of 161077530 is about 544.0994920573.

The spelling of 161077530 in words is "one hundred sixty-one million, seventy-seven thousand, five hundred thirty".