61224057 has 6 divisors (see below), whose sum is σ = 88434762. Its totient is φ = 40816032.

The previous prime is 61224043. The next prime is 61224071. The reversal of 61224057 is 75042216.

61224057 is a `hidden beast` number, since 612 + 2 + 40 + 5 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (61224043) and next prime (61224071).

It can be written as a sum of positive squares in only one way, i.e., 59536656 + 1687401 = 7716^2 + 1299^2 .

It is not a de Polignac number, because 61224057 - 2⁶ = 61223993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61224057.

It is not an unprimeable number, because it can be changed into a prime (61224857) 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, 3401328 + ... + 3401345.

It is an arithmetic number, because the mean of its divisors is an integer number (14739127).

Almost surely, 2^61224057 is an apocalyptic number.

It is an amenable number.

61224057 is a deficient number, since it is larger than the sum of its proper divisors (27210705).

61224057 is a wasteful number, since it uses less digits than its factorization.

61224057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6802679 (or 6802676 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 61224057 is about 7824.5803082338. The cubic root of 61224057 is about 394.1310964887.

The spelling of 61224057 in words is "sixty-one million, two hundred twenty-four thousand, fifty-seven".