52070661 has 8 divisors (see below), whose sum is σ = 77141760. Its totient is φ = 34713756.

The previous prime is 52070657. The next prime is 52070687. The reversal of 52070661 is 16607025.

It is not a de Polignac number, because 52070661 - 2² = 52070657 is a prime.

It is a super-2 number, since 2×52070661² = 5422707473953842, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1928543 = 52070661 / (5 + 2 + 0 + 7 + 0 + 6 + 6 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52070461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 964245 + ... + 964298.

It is an arithmetic number, because the mean of its divisors is an integer number (9642720).

Almost surely, 2^52070661 is an apocalyptic number.

It is an amenable number.

52070661 is a deficient number, since it is larger than the sum of its proper divisors (25071099).

52070661 is a wasteful number, since it uses less digits than its factorization.

52070661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928552 (or 1928546 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 52070661 is about 7216.0003464523. Note that the first 3 decimals coincide. The cubic root of 52070661 is about 373.4201051671.

Adding to 52070661 its reverse (16607025), we get a palindrome (68677686).

The spelling of 52070661 in words is "fifty-two million, seventy thousand, six hundred sixty-one".