54021501 has 6 divisors (see below), whose sum is σ = 78031070. Its totient is φ = 36014328.

The previous prime is 54021491. The next prime is 54021511. The reversal of 54021501 is 10512045.

It is an interprime number because it is at equal distance from previous prime (54021491) and next prime (54021511).

It can be written as a sum of positive squares in only one way, i.e., 50041476 + 3980025 = 7074^2 + 1995^2 .

It is not a de Polignac number, because 54021501 - 2¹⁷ = 53890429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54021511) 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, 3001186 + ... + 3001203.

Almost surely, 2^54021501 is an apocalyptic number.

It is an amenable number.

54021501 is a deficient number, since it is larger than the sum of its proper divisors (24009569).

54021501 is a wasteful number, since it uses less digits than its factorization.

54021501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6002395 (or 6002392 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 54021501 is about 7349.9320405021. The cubic root of 54021501 is about 378.0264741683.

Adding to 54021501 its reverse (10512045), we get a palindrome (64533546).

It can be divided in two parts, 5402 and 1501, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 54021501 in words is "fifty-four million, twenty-one thousand, five hundred one".