63742551 has 8 divisors (see below), whose sum is σ = 87920880. Its totient is φ = 41029632.

The previous prime is 63742531. The next prime is 63742561. The reversal of 63742551 is 15524736.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63742551 - 2⁶ = 63742487 is a prime.

It is a super-2 number, since 2×63742551² = 8126225615975202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63742531) 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, 366250 + ... + 366423.

It is an arithmetic number, because the mean of its divisors is an integer number (10990110).

Almost surely, 2^63742551 is an apocalyptic number.

63742551 is a deficient number, since it is larger than the sum of its proper divisors (24178329).

63742551 is a wasteful number, since it uses less digits than its factorization.

63742551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732705.

The product of its digits is 25200, while the sum is 33.

The square root of 63742551 is about 7983.8932232339. The cubic root of 63742551 is about 399.4629271212.

The spelling of 63742551 in words is "sixty-three million, seven hundred forty-two thousand, five hundred fifty-one".