166377541 has 6 divisors (see below), whose sum is σ = 182877926. Its totient is φ = 151252200.

The previous prime is 166377529. The next prime is 166377577. The reversal of 166377541 is 145773661.

166377541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 118352641 + 48024900 = 10879^2 + 6930^2 .

It is not a de Polignac number, because 166377541 - 2²⁵ = 132823109 is a prime.

It is a super-2 number, since 2×166377541² = 55362972298413362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166377494 and 166377503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166377511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 687390 + ... + 687631.

Almost surely, 2^166377541 is an apocalyptic number.

166377541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

166377541 is a deficient number, since it is larger than the sum of its proper divisors (16500385).

166377541 is a wasteful number, since it uses less digits than its factorization.

166377541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375043 (or 1375032 counting only the distinct ones).

The product of its digits is 105840, while the sum is 40.

The square root of 166377541 is about 12898.7418378693. The cubic root of 166377541 is about 550.0027999857.

The spelling of 166377541 in words is "one hundred sixty-six million, three hundred seventy-seven thousand, five hundred forty-one".