61225455 has 16 divisors (see below), whose sum is σ = 98058240. Its totient is φ = 32621088.

The previous prime is 61225427. The next prime is 61225459. The reversal of 61225455 is 55452216.

It is not a de Polignac number, because 61225455 - 2¹³ = 61217263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61225459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26226 + ... + 28464.

It is an arithmetic number, because the mean of its divisors is an integer number (6128640).

Almost surely, 2^61225455 is an apocalyptic number.

61225455 is a deficient number, since it is larger than the sum of its proper divisors (36832785).

61225455 is a wasteful number, since it uses less digits than its factorization.

61225455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070.

The product of its digits is 12000, while the sum is 30.

The square root of 61225455 is about 7824.6696415887. The cubic root of 61225455 is about 394.1340963502.

The spelling of 61225455 in words is "sixty-one million, two hundred twenty-five thousand, four hundred fifty-five".