52661973 has 32 divisors (see below), whose sum is σ = 90187776. Its totient is φ = 26566848.

The previous prime is 52661969. The next prime is 52661993. The reversal of 52661973 is 37916625.

It is not a de Polignac number, because 52661973 - 2² = 52661969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52661993) 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, 2086 + ... + 10472.

It is an arithmetic number, because the mean of its divisors is an integer number (2818368).

Almost surely, 2^52661973 is an apocalyptic number.

It is an amenable number.

52661973 is a deficient number, since it is larger than the sum of its proper divisors (37525803).

52661973 is a wasteful number, since it uses less digits than its factorization.

52661973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8433.

The product of its digits is 68040, while the sum is 39.

The square root of 52661973 is about 7256.8569642787. The cubic root of 52661973 is about 374.8283018424.

The spelling of 52661973 in words is "fifty-two million, six hundred sixty-one thousand, nine hundred seventy-three".