61523253 has 32 divisors (see below), whose sum is σ = 101145600. Its totient is φ = 36644400.

The previous prime is 61523237. The next prime is 61523257. The reversal of 61523253 is 35232516.

61523253 is a `hidden beast` number, since 615 + 23 + 25 + 3 = 666.

It is not a de Polignac number, because 61523253 - 2⁴ = 61523237 is a prime.

It is a super-2 number, since 2×61523253² = 7570221319404018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61523257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15768 + ... + 19278.

It is an arithmetic number, because the mean of its divisors is an integer number (3160800).

Almost surely, 2^61523253 is an apocalyptic number.

It is an amenable number.

61523253 is a deficient number, since it is larger than the sum of its proper divisors (39622347).

61523253 is a wasteful number, since it uses less digits than its factorization.

61523253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3590 (or 3584 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 61523253 is about 7843.6759876986. The cubic root of 61523253 is about 394.7720802310.

Adding to 61523253 its reverse (35232516), we get a palindrome (96755769).

It can be divided in two parts, 61523 and 253, that added together give a triangular number (61776 = T₃₅₁).

The spelling of 61523253 in words is "sixty-one million, five hundred twenty-three thousand, two hundred fifty-three".