55901011 has 2 divisors, whose sum is σ = 55901012. Its totient is φ = 55901010.

The previous prime is 55900997. The next prime is 55901023. The reversal of 55901011 is 11010955.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55901011 - 2⁹ = 55900499 is a prime.

It is not a weakly prime, because it can be changed into another prime (55901411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27950505 + 27950506.

It is an arithmetic number, because the mean of its divisors is an integer number (27950506).

Almost surely, 2^55901011 is an apocalyptic number.

55901011 is a deficient number, since it is larger than the sum of its proper divisors (1).

55901011 is an equidigital number, since it uses as much as digits as its factorization.

55901011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225, while the sum is 22.

The square root of 55901011 is about 7476.6978673743. The cubic root of 55901011 is about 382.3606760440.

Adding to 55901011 its reverse (11010955), we get a palindrome (66911966).

The spelling of 55901011 in words is "fifty-five million, nine hundred one thousand, eleven".