54152621 has 2 divisors, whose sum is σ = 54152622. Its totient is φ = 54152620.

The previous prime is 54152611. The next prime is 54152639. The reversal of 54152621 is 12625145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52562500 + 1590121 = 7250^2 + 1261^2 .

It is a cyclic number.

It is not a de Polignac number, because 54152621 - 2¹⁸ = 53890477 is a prime.

It is a super-2 number, since 2×54152621² = 5865012722339282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54152611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27076310 + 27076311.

It is an arithmetic number, because the mean of its divisors is an integer number (27076311).

Almost surely, 2^54152621 is an apocalyptic number.

It is an amenable number.

54152621 is a deficient number, since it is larger than the sum of its proper divisors (1).

54152621 is an equidigital number, since it uses as much as digits as its factorization.

54152621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 26.

The square root of 54152621 is about 7358.8464449260. The cubic root of 54152621 is about 378.3320733698.

Adding to 54152621 its reverse (12625145), we get a palindrome (66777766).

The spelling of 54152621 in words is "fifty-four million, one hundred fifty-two thousand, six hundred twenty-one".