61572233 has 2 divisors, whose sum is σ = 61572234. Its totient is φ = 61572232.

The previous prime is 61572221. The next prime is 61572253. The reversal of 61572233 is 33227516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61418569 + 153664 = 7837^2 + 392^2 .

It is a cyclic number.

It is not a de Polignac number, because 61572233 - 2¹⁴ = 61555849 is a prime.

It is a super-2 number, since 2×61572233² = 7582279753212578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61572196 and 61572205.

It is not a weakly prime, because it can be changed into another prime (61572253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30786116 + 30786117.

It is an arithmetic number, because the mean of its divisors is an integer number (30786117).

Almost surely, 2^61572233 is an apocalyptic number.

It is an amenable number.

61572233 is a deficient number, since it is larger than the sum of its proper divisors (1).

61572233 is an equidigital number, since it uses as much as digits as its factorization.

61572233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 29.

The square root of 61572233 is about 7846.7976270578. The cubic root of 61572233 is about 394.8768146556.

Adding to 61572233 its reverse (33227516), we get a palindrome (94799749).

The spelling of 61572233 in words is "sixty-one million, five hundred seventy-two thousand, two hundred thirty-three".