7212501652 has 24 divisors (see below), whose sum is σ = 12852068040. Its totient is φ = 3540696960.

The previous prime is 7212501623. The next prime is 7212501679. The reversal of 7212501652 is 2561052127.

It can be written as a sum of positive squares in 4 ways, for example, as 242923396 + 6969578256 = 15586^2 + 83484^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109374 + ... + 162442.

It is an arithmetic number, because the mean of its divisors is an integer number (535502835).

Almost surely, 2^7212501652 is an apocalyptic number.

It is an amenable number.

7212501652 is a deficient number, since it is larger than the sum of its proper divisors (5639566388).

7212501652 is a wasteful number, since it uses less digits than its factorization.

7212501652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53691 (or 53689 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 7212501652 is about 84926.4484833788. The cubic root of 7212501652 is about 1932.0957352323.

Adding to 7212501652 its reverse (2561052127), we get a palindrome (9773553779).

The spelling of 7212501652 in words is "seven billion, two hundred twelve million, five hundred one thousand, six hundred fifty-two".