61256451 has 8 divisors (see below), whose sum is σ = 81738000. Its totient is φ = 40806272.

The previous prime is 61256431. The next prime is 61256471. The reversal of 61256451 is 15465216.

61256451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61256431) and next prime (61256471).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61256451 - 2⁶ = 61256387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61256431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2826 + ... + 11423.

It is an arithmetic number, because the mean of its divisors is an integer number (10217250).

Almost surely, 2^61256451 is an apocalyptic number.

61256451 is a deficient number, since it is larger than the sum of its proper divisors (20481549).

61256451 is a wasteful number, since it uses less digits than its factorization.

61256451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15685.

The product of its digits is 7200, while the sum is 30.

The square root of 61256451 is about 7826.6500496700. The cubic root of 61256451 is about 394.2005965743.

The spelling of 61256451 in words is "sixty-one million, two hundred fifty-six thousand, four hundred fifty-one".