921377541 has 16 divisors (see below), whose sum is σ = 1404460544. Its totient is φ = 526330224.

The previous prime is 921377521. The next prime is 921377551. The reversal of 921377541 is 145773129.

It is not a de Polignac number, because 921377541 - 2⁶ = 921377477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 921377541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921377521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89250 + ... + 99036.

It is an arithmetic number, because the mean of its divisors is an integer number (87778784).

Almost surely, 2^921377541 is an apocalyptic number.

It is an amenable number.

921377541 is a deficient number, since it is larger than the sum of its proper divisors (483083003).

921377541 is a wasteful number, since it uses less digits than its factorization.

921377541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14280.

The product of its digits is 52920, while the sum is 39.

The square root of 921377541 is about 30354.2013731213. The cubic root of 921377541 is about 973.0740120316.

The spelling of 921377541 in words is "nine hundred twenty-one million, three hundred seventy-seven thousand, five hundred forty-one".