61226451 has 48 divisors (see below), whose sum is σ = 105067872. Its totient is φ = 33868800.

The previous prime is 61226449. The next prime is 61226461. The reversal of 61226451 is 15462216.

61226451 is a `hidden beast` number, since 6 + 12 + 2 + 645 + 1 = 666.

It is not a de Polignac number, because 61226451 - 2¹ = 61226449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61226411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 145221 + ... + 145641.

It is an arithmetic number, because the mean of its divisors is an integer number (2188914).

Almost surely, 2^61226451 is an apocalyptic number.

61226451 is a deficient number, since it is larger than the sum of its proper divisors (43841421).

61226451 is a wasteful number, since it uses less digits than its factorization.

61226451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 561 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 61226451 is about 7824.7332861894. The cubic root of 61226451 is about 394.1362335628.

Adding to 61226451 its reverse (15462216), we get a palindrome (76688667).

The spelling of 61226451 in words is "sixty-one million, two hundred twenty-six thousand, four hundred fifty-one".