61225451 has 6 divisors (see below), whose sum is σ = 71221500. Its totient is φ = 52478916.

The previous prime is 61225427. The next prime is 61225459. The reversal of 61225451 is 15452216.

It is not a de Polignac number, because 61225451 - 2⁶ = 61225387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61225451.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 624701 + ... + 624798.

It is an arithmetic number, because the mean of its divisors is an integer number (11870250).

Almost surely, 2^61225451 is an apocalyptic number.

61225451 is a deficient number, since it is larger than the sum of its proper divisors (9996049).

61225451 is a wasteful number, since it uses less digits than its factorization.

61225451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249513 (or 1249506 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 61225451 is about 7824.6693859869. The cubic root of 61225451 is about 394.1340877670.

Adding to 61225451 its reverse (15452216), we get a palindrome (76677667).

The spelling of 61225451 in words is "sixty-one million, two hundred twenty-five thousand, four hundred fifty-one".