621371541 has 8 divisors (see below), whose sum is σ = 946851904. Its totient is φ = 355069440.

The previous prime is 621371521. The next prime is 621371557. The reversal of 621371541 is 145173126.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 621371541 - 2¹⁰ = 621370517 is a prime.

It is a super-2 number, since 2×621371541² = 772205183929429362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 621371499 and 621371508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621371521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14794540 + ... + 14794581.

It is an arithmetic number, because the mean of its divisors is an integer number (118356488).

Almost surely, 2^621371541 is an apocalyptic number.

It is an amenable number.

621371541 is a deficient number, since it is larger than the sum of its proper divisors (325480363).

621371541 is a wasteful number, since it uses less digits than its factorization.

621371541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29589131.

The product of its digits is 5040, while the sum is 30.

The square root of 621371541 is about 24927.3251874324. The cubic root of 621371541 is about 853.3302070842.

The spelling of 621371541 in words is "six hundred twenty-one million, three hundred seventy-one thousand, five hundred forty-one".