55450061 has 2 divisors, whose sum is σ = 55450062. Its totient is φ = 55450060.

The previous prime is 55450051. The next prime is 55450067. The reversal of 55450061 is 16005455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31292836 + 24157225 = 5594^2 + 4915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55450061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55450061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55450067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27725030 + 27725031.

It is an arithmetic number, because the mean of its divisors is an integer number (27725031).

Almost surely, 2^55450061 is an apocalyptic number.

It is an amenable number.

55450061 is a deficient number, since it is larger than the sum of its proper divisors (1).

55450061 is an equidigital number, since it uses as much as digits as its factorization.

55450061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 55450061 is about 7446.4797723488. The cubic root of 55450061 is about 381.3297389068.

The spelling of 55450061 in words is "fifty-five million, four hundred fifty thousand, sixty-one".