55993501 has 2 divisors, whose sum is σ = 55993502. Its totient is φ = 55993500.

The previous prime is 55993481. The next prime is 55993559. The reversal of 55993501 is 10539955.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55517401 + 476100 = 7451^2 + 690^2 .

It is a cyclic number.

It is not a de Polignac number, because 55993501 - 2¹³ = 55985309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55993571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27996750 + 27996751.

It is an arithmetic number, because the mean of its divisors is an integer number (27996751).

Almost surely, 2^55993501 is an apocalyptic number.

It is an amenable number.

55993501 is a deficient number, since it is larger than the sum of its proper divisors (1).

55993501 is an equidigital number, since it uses as much as digits as its factorization.

55993501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30375, while the sum is 37.

The square root of 55993501 is about 7482.8805282458. The cubic root of 55993501 is about 382.5714358155.

The spelling of 55993501 in words is "fifty-five million, nine hundred ninety-three thousand, five hundred one".