537377021 has 4 divisors (see below), whose sum is σ = 568987452. Its totient is φ = 505766592.

The previous prime is 537376967. The next prime is 537377069. The reversal of 537377021 is 120773735.

537377021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 153412996 + 383964025 = 12386^2 + 19595^2 .

It is not a de Polignac number, because 537377021 - 2¹⁰ = 537375997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537377081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15805190 + ... + 15805223.

It is an arithmetic number, because the mean of its divisors is an integer number (142246863).

Almost surely, 2^537377021 is an apocalyptic number.

It is an amenable number.

537377021 is a deficient number, since it is larger than the sum of its proper divisors (31610431).

537377021 is a wasteful number, since it uses less digits than its factorization.

537377021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31610430.

The product of its (nonzero) digits is 30870, while the sum is 35.

The square root of 537377021 is about 23181.3938536922. The cubic root of 537377021 is about 813.0046517296.

The spelling of 537377021 in words is "five hundred thirty-seven million, three hundred seventy-seven thousand, twenty-one".