61225747 has 16 divisors (see below), whose sum is σ = 70237440. Its totient is φ = 52826400.

The previous prime is 61225741. The next prime is 61225753. The reversal of 61225747 is 74752216.

It is an interprime number because it is at equal distance from previous prime (61225741) and next prime (61225753).

It is a de Polignac number, because none of the positive numbers 2^k-61225747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61225741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34297 + ... + 36037.

It is an arithmetic number, because the mean of its divisors is an integer number (4389840).

Almost surely, 2^61225747 is an apocalyptic number.

61225747 is a deficient number, since it is larger than the sum of its proper divisors (9011693).

61225747 is a wasteful number, since it uses less digits than its factorization.

61225747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914.

The product of its digits is 23520, while the sum is 34.

The square root of 61225747 is about 7824.6883005012. The cubic root of 61225747 is about 394.1347229250.

The spelling of 61225747 in words is "sixty-one million, two hundred twenty-five thousand, seven hundred forty-seven".