61425455 has 32 divisors (see below), whose sum is σ = 91521024. Its totient is φ = 38537856.

The previous prime is 61425449. The next prime is 61425487. The reversal of 61425455 is 55452416.

It is not a de Polignac number, because 61425455 - 2⁶ = 61425391 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57254 + ... + 58316.

It is an arithmetic number, because the mean of its divisors is an integer number (2860032).

Almost surely, 2^61425455 is an apocalyptic number.

61425455 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61425455 is a deficient number, since it is larger than the sum of its proper divisors (30095569).

61425455 is a wasteful number, since it uses less digits than its factorization.

61425455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215.

The product of its digits is 24000, while the sum is 32.

The square root of 61425455 is about 7837.4393139596. The cubic root of 61425455 is about 394.5627913671.

The spelling of 61425455 in words is "sixty-one million, four hundred twenty-five thousand, four hundred fifty-five".