54551969 has 2 divisors, whose sum is σ = 54551970. Its totient is φ = 54551968.

The previous prime is 54551953. The next prime is 54552013. The reversal of 54551969 is 96915545.

It is an a-pointer prime, because the next prime (54552013) can be obtained adding 54551969 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50225569 + 4326400 = 7087^2 + 2080^2 .

It is a cyclic number.

It is not a de Polignac number, because 54551969 - 2⁴ = 54551953 is a prime.

It is a super-2 number, since 2×54551969² = 5951834643553922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54551069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27275984 + 27275985.

It is an arithmetic number, because the mean of its divisors is an integer number (27275985).

Almost surely, 2^54551969 is an apocalyptic number.

It is an amenable number.

54551969 is a deficient number, since it is larger than the sum of its proper divisors (1).

54551969 is an equidigital number, since it uses as much as digits as its factorization.

54551969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243000, while the sum is 44.

The square root of 54551969 is about 7385.9304762501. The cubic root of 54551969 is about 379.2597987117.

The spelling of 54551969 in words is "fifty-four million, five hundred fifty-one thousand, nine hundred sixty-nine".