72062551 has 4 divisors (see below), whose sum is σ = 78613704. Its totient is φ = 65511400.

The previous prime is 72062537. The next prime is 72062579. The reversal of 72062551 is 15526027.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72062551 - 2¹¹ = 72060503 is a prime.

It is a super-2 number, since 2×72062551² = 10386022513255202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72062521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3275560 + ... + 3275581.

It is an arithmetic number, because the mean of its divisors is an integer number (19653426).

Almost surely, 2^72062551 is an apocalyptic number.

72062551 is a deficient number, since it is larger than the sum of its proper divisors (6551153).

72062551 is a wasteful number, since it uses less digits than its factorization.

72062551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6551152.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 72062551 is about 8488.9664270746. The cubic root of 72062551 is about 416.1372031870.

Adding to 72062551 its reverse (15526027), we get a palindrome (87588578).

The spelling of 72062551 in words is "seventy-two million, sixty-two thousand, five hundred fifty-one".