55701551 has 2 divisors, whose sum is σ = 55701552. Its totient is φ = 55701550.

The previous prime is 55701523. The next prime is 55701577. The reversal of 55701551 is 15510755.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55701551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55701851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27850775 + 27850776.

It is an arithmetic number, because the mean of its divisors is an integer number (27850776).

Almost surely, 2^55701551 is an apocalyptic number.

55701551 is a deficient number, since it is larger than the sum of its proper divisors (1).

55701551 is an equidigital number, since it uses as much as digits as its factorization.

55701551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4375, while the sum is 29.

The square root of 55701551 is about 7463.3471713434. The cubic root of 55701551 is about 381.9053679499.

The spelling of 55701551 in words is "fifty-five million, seven hundred one thousand, five hundred fifty-one".