161245548 has 54 divisors (see below), whose sum is σ = 426135164. Its totient is φ = 51405552.

The previous prime is 161245547. The next prime is 161245549. The reversal of 161245548 is 845542161.

It is a happy number.

161245548 is a `hidden beast` number, since 161 + 2 + 455 + 48 = 666.

161245548 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 (161245547) and next prime (161245549).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (161245547) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14811 + ... + 23277.

Almost surely, 2^161245548 is an apocalyptic number.

161245548 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161245548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213067582).

161245548 is an abundant number, since it is smaller than the sum of its proper divisors (264889616).

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

161245548 is a wasteful number, since it uses less digits than its factorization.

161245548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8523 (or 8495 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 161245548 is about 12698.2498006615. The cubic root of 161245548 is about 544.2886074914.

The spelling of 161245548 in words is "one hundred sixty-one million, two hundred forty-five thousand, five hundred forty-eight".