542311501 has 4 divisors (see below), whose sum is σ = 543132604. Its totient is φ = 541490400.

The previous prime is 542311493. The next prime is 542311507. The reversal of 542311501 is 105113245.

It is a happy number.

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 175589001 + 366722500 = 13251^2 + 19150^2 .

It is a cyclic number.

It is not a de Polignac number, because 542311501 - 2³ = 542311493 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 (542311507) 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, 409560 + ... + 410881.

It is an arithmetic number, because the mean of its divisors is an integer number (135783151).

Almost surely, 2^542311501 is an apocalyptic number.

It is an amenable number.

542311501 is a deficient number, since it is larger than the sum of its proper divisors (821103).

542311501 is an equidigital number, since it uses as much as digits as its factorization.

542311501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821102.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 542311501 is about 23287.5825495048. The cubic root of 542311501 is about 815.4855530621.

Adding to 542311501 its reverse (105113245), we get a palindrome (647424746).

The spelling of 542311501 in words is "five hundred forty-two million, three hundred eleven thousand, five hundred one".