55453511 has 2 divisors, whose sum is σ = 55453512. Its totient is φ = 55453510.

The previous prime is 55453493. The next prime is 55453523. The reversal of 55453511 is 11535455.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55453511 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55453591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27726755 + 27726756.

It is an arithmetic number, because the mean of its divisors is an integer number (27726756).

Almost surely, 2^55453511 is an apocalyptic number.

55453511 is a deficient number, since it is larger than the sum of its proper divisors (1).

55453511 is an equidigital number, since it uses as much as digits as its factorization.

55453511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7500, while the sum is 29.

The square root of 55453511 is about 7446.7114218291. The cubic root of 55453511 is about 381.3376472859.

Adding to 55453511 its reverse (11535455), we get a palindrome (66988966).

The spelling of 55453511 in words is "fifty-five million, four hundred fifty-three thousand, five hundred eleven".