54212981 has 4 divisors (see below), whose sum is σ = 55473792. Its totient is φ = 52952172.

The previous prime is 54212971. The next prime is 54212987. The reversal of 54212981 is 18921245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54212981 - 2¹⁰ = 54211957 is a prime.

It is a super-2 number, since 2×54212981² = 5878094617812722, which contains 22 as substring.

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 (54212987) 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, 630341 + ... + 630426.

It is an arithmetic number, because the mean of its divisors is an integer number (13868448).

Almost surely, 2^54212981 is an apocalyptic number.

It is an amenable number.

54212981 is a deficient number, since it is larger than the sum of its proper divisors (1260811).

54212981 is a wasteful number, since it uses less digits than its factorization.

54212981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260810.

The product of its digits is 5760, while the sum is 32.

The square root of 54212981 is about 7362.9464890083. The cubic root of 54212981 is about 378.4725876188.

The spelling of 54212981 in words is "fifty-four million, two hundred twelve thousand, nine hundred eighty-one".