61362551 has 4 divisors (see below), whose sum is σ = 64030512. Its totient is φ = 58694592.

The previous prime is 61362517. The next prime is 61362557. The reversal of 61362551 is 15526316.

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 61362551 - 2¹⁴ = 61346167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61362557) 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, 1333946 + ... + 1333991.

It is an arithmetic number, because the mean of its divisors is an integer number (16007628).

Almost surely, 2^61362551 is an apocalyptic number.

61362551 is a deficient number, since it is larger than the sum of its proper divisors (2667961).

61362551 is a wasteful number, since it uses less digits than its factorization.

61362551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2667960.

The product of its digits is 5400, while the sum is 29.

The square root of 61362551 is about 7833.4252405956. The cubic root of 61362551 is about 394.4280586521.

Adding to 61362551 its reverse (15526316), we get a palindrome (76888867).

The spelling of 61362551 in words is "sixty-one million, three hundred sixty-two thousand, five hundred fifty-one".